diff --git a/README.md b/README.md
index f6c0e447..1eea669c 100644
--- a/README.md
+++ b/README.md
@@ -21,11 +21,13 @@ Developer-friendly incident response with brilliant Slack integration.
 We prepared multiple environments: [production](https://grafana.com/docs/grafana-cloud/oncall/open-source/#production-environment), [developer](DEVELOPER.md) and hobby:
 
 1. Download docker-compose.yaml:
+
 ```bash
 curl -fsSL https://raw.githubusercontent.com/grafana/oncall/dev/docker-compose.yml -o docker-compose.yml
 ```
 
 2. Set variables:
+
 ```bash
 echo "DOMAIN=http://localhost:8080
 SECRET_KEY=my_random_secret_must_be_more_than_32_characters_long
@@ -37,26 +39,31 @@ GRAFANA_PASSWORD=admin" > .env_hobby
 ```
 
 3. Launch services:
+
 ```bash
 docker-compose --env-file .env_hobby -f docker-compose.yml up -d
 ```
 
 4. Issue one-time invite token:
+
 ```bash
 docker-compose --env-file .env_hobby -f docker-compose.yml run engine python manage.py issue_invite_for_the_frontend --override
 ```
 
+**Note**: if you remove the plugin configuration and reconfigure it, you will need to generate a new one-time invite token for your new configuration.
+
 5. Go to [OnCall Plugin Configuration](http://localhost:3000/plugins/grafana-oncall-app), using log in credentials as defined above: `admin`/`admin` (or find OnCall plugin in configuration->plugins) and connect OnCall _plugin_ with OnCall _backend_:
+
 ```
 Invite token: ^^^ from the previous step.
 OnCall backend URL: http://engine:8080
 Grafana Url: http://grafana:3000
 ```
 
-6. Enjoy! Check our [OSS docs](https://grafana.com/docs/grafana-cloud/oncall/open-source/) if you want to set up Slack, Telegram, Twilio or SMS/calls through Grafana Cloud. 
-
+6. Enjoy! Check our [OSS docs](https://grafana.com/docs/grafana-cloud/oncall/open-source/) if you want to set up Slack, Telegram, Twilio or SMS/calls through Grafana Cloud.
 
 ## Update version
+
 To update your Grafana OnCall hobby environment:
 
 ```shell
@@ -76,14 +83,13 @@ See [Grafana docs](https://grafana.com/docs/grafana/latest/administration/plugin
 <a href="https://github.com/grafana/oncall/discussions"><img width="200px" src="docs/img/GH_discussions.png"></a>
 <a href="https://slack.grafana.com/"><img width="200px" src="docs/img/slack.png"></a>
 
-
 ## Stargazers over time
 
 [![Stargazers over time](https://starchart.cc/grafana/oncall.svg)](https://starchart.cc/grafana/oncall)
 
-
 ## Further Reading
-- *Migration from the PagerDuty* - [Migrator](https://github.com/grafana/oncall/tree/dev/tools/pagerduty-migrator)
-- *Documentation* - [Grafana OnCall](https://grafana.com/docs/grafana-cloud/oncall/)
-- *Blog Post* - [Announcing Grafana OnCall, the easiest way to do on-call management](https://grafana.com/blog/2021/11/09/announcing-grafana-oncall/)
-- *Presentation* - [Deep dive into the Grafana, Prometheus, and Alertmanager stack for alerting and on-call management](https://grafana.com/go/observabilitycon/2021/alerting/?pg=blog)
+
+- _Migration from the PagerDuty_ - [Migrator](https://github.com/grafana/oncall/tree/dev/tools/pagerduty-migrator)
+- _Documentation_ - [Grafana OnCall](https://grafana.com/docs/grafana-cloud/oncall/)
+- _Blog Post_ - [Announcing Grafana OnCall, the easiest way to do on-call management](https://grafana.com/blog/2021/11/09/announcing-grafana-oncall/)
+- _Presentation_ - [Deep dive into the Grafana, Prometheus, and Alertmanager stack for alerting and on-call management](https://grafana.com/go/observabilitycon/2021/alerting/?pg=blog)
diff --git a/engine/settings/helm.py b/engine/settings/helm.py
index 3f9f1a62..00fa96c3 100644
--- a/engine/settings/helm.py
+++ b/engine/settings/helm.py
@@ -33,10 +33,12 @@ CELERY_BROKER_URL = (
     f"{RABBITMQ_PROTOCOL}://{RABBITMQ_USERNAME}:{RABBITMQ_PASSWORD}@{RABBITMQ_HOST}:{RABBITMQ_PORT}/{RABBITMQ_VHOST}"
 )
 
+REDIS_USERNAME = os.environ.get("REDIS_USERNAME", "")
 REDIS_PASSWORD = os.environ.get("REDIS_PASSWORD")
 REDIS_HOST = os.environ.get("REDIS_HOST")
 REDIS_PORT = os.environ.get("REDIS_PORT", "6379")
-REDIS_URI = f"redis://:{REDIS_PASSWORD}@{REDIS_HOST}:{REDIS_PORT}"
+REDIS_PROTOCOL = os.environ.get("REDIS_PROTOCOL", "redis")
+REDIS_URI = f"{REDIS_PROTOCOL}://{REDIS_USERNAME}:{REDIS_PASSWORD}@{REDIS_HOST}:{REDIS_PORT}"
 
 CACHES = {
     "default": {
diff --git a/grafana-plugin/src/containers/PluginConfigPage/PluginConfigPage.tsx b/grafana-plugin/src/containers/PluginConfigPage/PluginConfigPage.tsx
index 264315b3..e199bf02 100644
--- a/grafana-plugin/src/containers/PluginConfigPage/PluginConfigPage.tsx
+++ b/grafana-plugin/src/containers/PluginConfigPage/PluginConfigPage.tsx
@@ -11,12 +11,8 @@ import {
   Label,
   Legend,
   LoadingPlaceholder,
-  Icon,
-  Alert,
-  Modal,
 } from '@grafana/ui';
 import cn from 'classnames/bind';
-import CopyToClipboard from 'react-copy-to-clipboard';
 import { OnCallAppSettings } from 'types';
 
 import Block from 'components/GBlock/Block';
@@ -28,6 +24,8 @@ import { createGrafanaToken, getPluginSyncStatus, startPluginSync, updateGrafana
 import { GRAFANA_LICENSE_OSS } from 'utils/consts';
 import { getItem, setItem } from 'utils/localStorage';
 
+import { constructSyncErrorMessage, constructErrorActionMessage } from './helpers';
+
 import styles from './PluginConfigPage.module.css';
 
 const cx = cn.bind(styles);
@@ -45,6 +43,8 @@ export const PluginConfigPage = (props: Props) => {
   const [isSelfHostedInstall, setIsSelfHostedInstall] = useState<boolean>(true);
   const [retrySync, setRetrySync] = useState<boolean>(false);
 
+  const INVALID_INVITE_TOKEN_ERROR_MSG = `It seems like your invite token may be invalid. ${constructErrorActionMessage('generating a new invite token')}`;
+
   const setupPlugin = useCallback(async () => {
     setItem('onCallApiUrl', onCallApiUrl);
     setItem('grafanaUrl', grafanaUrl);
@@ -129,25 +129,37 @@ export const PluginConfigPage = (props: Props) => {
   }, []);
 
   const handleSyncException = useCallback((e) => {
+    const buildErrMsg = (msg: string): string =>
+      constructSyncErrorMessage(msg, plugin.meta.jsonData.onCallApiUrl);
+
     if (plugin.meta.jsonData?.onCallApiUrl) {
-      let statusMessage = plugin.meta.jsonData.onCallApiUrl + '\n' + e + ', retry or check settings & re-initialize.';
-      if (e.response.status == 404) {
-        statusMessage += '\nIf Grafana OnCall was just installed, restart Grafana for OnCall routes to be available.';
+      const { status: statusCode  } = e.response;
+
+      let statusMessage: string;
+
+      if (statusCode == 403) {
+        statusMessage = buildErrMsg(INVALID_INVITE_TOKEN_ERROR_MSG);
+      } else if (statusCode === 404) {
+        statusMessage = buildErrMsg('If Grafana OnCall was just installed, restart Grafana for OnCall routes to be available.');
+      } else if (statusCode === 502) {
+        statusMessage = buildErrMsg(`Unable to communicate with either the Grafana API, or Grafana OnCall engine API. ${constructErrorActionMessage('verify that the API URLs that you entered are correct')}`);
+      } else {
+        statusMessage = buildErrMsg(`An unknown error occured. ${constructErrorActionMessage()}. If the error still occurs please reach out to support.`)
       }
       setPluginStatusMessage(statusMessage);
       setRetrySync(true);
     } else {
-      setPluginStatusMessage('OnCall has not been setup, configure & initialize below.');
+      setPluginStatusMessage(buildErrMsg('OnCall has not been setup, configure & initialize below.'));
     }
     setPluginStatusOk(false);
     setPluginConfigLoading(false);
   }, []);
 
-  const finishSync = useCallback((get_sync_response) => {
-    if (get_sync_response.token_ok) {
+  const finishSync = useCallback((getSyncResponse) => {
+    if (getSyncResponse.token_ok) {
       const versionInfo =
-        get_sync_response.version && get_sync_response.license
-          ? ` (${get_sync_response.license}, ${get_sync_response.version})`
+        getSyncResponse.version && getSyncResponse.license
+          ? ` (${getSyncResponse.license}, ${getSyncResponse.version})`
           : '';
 
       let pluginStatusMessage = `Connected to OnCall${versionInfo}\n - OnCall URL: ${plugin.meta.jsonData.onCallApiUrl}\n`
@@ -159,9 +171,8 @@ export const PluginConfigPage = (props: Props) => {
       setIsSelfHostedInstall(plugin.meta.jsonData?.license === GRAFANA_LICENSE_OSS);
       setPluginStatusOk(true);
     } else {
-      setPluginStatusMessage(
-        `OnCall failed to connect to this grafana via: ${plugin.meta.jsonData.grafanaUrl} check URL, network, and API key.`
-      );
+      setPluginStatusMessage(constructSyncErrorMessage(INVALID_INVITE_TOKEN_ERROR_MSG,
+        plugin.meta.jsonData.grafanaUrl));
       setRetrySync(true);
     }
     setPluginConfigLoading(false);
@@ -221,14 +232,10 @@ export const PluginConfigPage = (props: Props) => {
           )}
           <p>{'Plugin <-> backend connection status'}</p>
           <pre>
-            <Text type="link">{pluginStatusMessage}</Text>
+            <Text>{pluginStatusMessage}</Text>
           </pre>
 
           <HorizontalGroup>
-            {/* <p>{'Plugin <-> backend connection status'}</p>
-              <pre>
-                <Text type="link">{pluginStatusMessage}</Text>
-              </pre> */}
             {retrySync && (
               <Button variant="primary" onClick={startSync} size="md">
                 Retry
diff --git a/grafana-plugin/src/containers/PluginConfigPage/helpers.tsx b/grafana-plugin/src/containers/PluginConfigPage/helpers.tsx
new file mode 100644
index 00000000..c91a391c
--- /dev/null
+++ b/grafana-plugin/src/containers/PluginConfigPage/helpers.tsx
@@ -0,0 +1,5 @@
+export const constructSyncErrorMessage = (errMsg: string, url?: string): string =>
+  `${url ? `${url}\n` : ''}${errMsg}`;
+
+export const constructErrorActionMessage = (msg?: string): string =>
+  `Try removing your current configuration, ${msg ? msg : 'double checking your settings'}, and re-initializing the plugin.\nBy removing your current configuration, you will need to ensure that you regenerate a new invite token, and input this in your new configuration.`