• Your Rocket.Chat.Android app version: Unsure, because I can't even connect to my server and hence can't get to the side menu. It's the latest version from the Google Play store as of today (2018-07-24).
• Your Rocket.Chat server version: 0.66.3
• Device model (or emulator) you're running with: Nexus 6P - Android 8.1.0
• Steps to reproduce: Attempt to connect to server https://rocket.imavex.com - this fails with "is not a valid Rocket.Chat instance."

I've verified that our server is sending the full certificate chain (this was cited in another thread as a possible issue) and that web sockets are working (using the instance from Chrome shows web socket activity in the network debugger).

I cannot figure out why the app refuses to connect to the server; the other apps appear to work fine. (I'd like to see better diagnostics from the app so that if there is an issue with the server, we can correct it.)