Custom sync server not working on Android
I've set a custom sync server following this guide -- https://mozilla-services.readthedocs.io/en/latest/howtos/run-sync-1.5.html -- and it works fine for Firefox 70 on the desktop. However, I just downloaded Firefox mobile (latest, v68) and it doesn't work. All options are greyed out, and clicking "sync" changes the text to "syncing", but after a few seconds it returns to the previous state, including "last synced: never".
I've set the "identity.sync.tokenserver.uri" value correctly on both desktop instances and on mobile. I have way less than 5000 favorites.
Additional System Details
- User Agent: Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:70.0) Gecko/20100101 Firefox/70.0
To be fair, we tend to only support the standard default installation of Sync as provided by Mozilla. If you need a hand with your own custom installation, I recomend you start at https://developer.mozilla.org/en-US/docs/Mozilla/Projects/Firefox_Sync