Hello, James.
If you don't see Login and Passwords fields on Android's version of Larix Broadcaster means Connection setting are made without authorization. If you need them, make a new connection. If you don't need them, use Default and do not fill Login and Password fields.
Use the following video as reference:
https://youtu.be/yG0nv7bJk-w?t=51
Updating an app is always a good idea, but this won't help for showing the No Authorisation string. (I will pass this on to developers, btw)
If you can't connect to your target via RTMP, make sure you ingest point reachable from your mobile device. (e.g. mobile uses the same LAN as your server)
Thank you.