Fix/repo troubleshooting

docs/faq.md

@@ -163,6 +163,33 @@ level group for Self-Hosted GitLab.
 
 ## Account Management {#account-management}
 
+### How to troubleshoot CodeRabbit not functioning on certain repositories?
+
+If CodeRabbit is not functioning on certain repositories, it is likely due to the repository not being accessible to CodeRabbit and you must reinstall the GitHub App or GitLab Integration.
+
+To troubleshoot this issue, please attempt to reinstall the GitHub App or GitLab Integration by following the steps below:
+
+- General Instructions:
+
+  1. Confirm that the author of a pull request has an active seat in CodeRabbit. If not please add them to enable CodeRabbit and then close/reopen the pull request.
+  2. Please insure if not selecting all repositories, that you have added all repositories that you would like to enable to the selected list in the app configuration.
+  3. If the repository is not in the list, you do not have to uninstall and reinstall the CodeRabbit App. Please add it to the list.
+  4. ![Select Repos](/img/faq/select-repos.png)
+
+- GitHub:
+
+  1. Go to Repository settings
+  2. Click **GitHub Apps** in the left sidebar under **Integrations**
+  3. Select **Configure** ![Select Repos](/img/faq/github-app-settings.png)
+  4. Click **Uninstall** at the bottom of the app configuration page. ![Uninstall](/img/faq/coderabbit-github-menu.png)
+  5. Go into the [Coderabbit App](https://github.com/apps/coderabbitai) and install it again with the **Add Repository** button. ![Add Repository](/img/faq/add-repository.png)
+
+- GitLab:
+
+  1. Remove OAuth App from User Settings > Applications
+  2. Remove Webhook from Group > Project Settings > Webhooks
+  3. Go into the [Coderabbit App](https://gitlab.com/apps/coderabbitai) and install it again. ![Install](/img/faq/gitlab-webhook.png)
+
 ### How do I delete my CodeRabbit account?
 
 :::danger Irreversible Account Deletion