chat: Add Reconnecting... section

content/docs/chat.md

@@ -38,7 +38,7 @@ One should follow the proper order of operations.
 
 ## Going Mobile
 
-Revolt's mobile app doesn't support custom domains yet. Instead, we must install our Revolt instance as a Progressive Web App (PWA).
+Revolt's native app doesn't support custom domains yet. Instead, we should install Revolt as a Progressive Web App (PWA).
 
 Please visit [revolt.handmadecities.com](https://revolt.handmadecities.com) on the phone's native browser (e.g. Safari on iOS), then look for an **Add to Homescreen** option (or similar):
 
@@ -72,6 +72,14 @@ Alternatively an *existing* Verified Human may vouch for someone they've met in
 
 {{< alert context="primary" text="Currently only [the founder](/docs/support/contact/) can manually grant badges, so the appeal is made to him." />}}
 
+## Reconnnecting...
+
+When Handmade Cities performs server maintenance (or upgrades) the chat client displays a `Reconnecting...` message:
+
+![](/images/hmc_docs_revolt_7.png)
+
+Wait a few minutes before manually refreshing the browser. If we're [on mobile](/docs/chat/#going-mobile), kill the app and reopen it.
+
 ## Limitations
 
 Revolt is known as Discord Lite because of some missing features. The quirks or limitations are as follows: