i had to remove account and relogin and now its working agian

same problem. Absolutely latest version of Firefox (135.0 Build #2016070975). Cleared all open tabs. Signed out of Mozilla account, restarted android device.

Device now shows Last synchronised: never

Doesn't matter how many times I tap to Synchronise now. It never does.

I have the same problem, logged out and then in, restarted phone, still same problem: tapping on "synchronize now" does nothing to change "last synchronised: never" response, all the buttons under "choose what to synchronize" are checked and grayed out. I can see the Android device along with all the other devices in my Firefox account.

I'm having the same issue and seeing a lot of other people struggling with it. It's been well over a month since it started and I hoped it would be fixed within a couple updates but unfortunately not.

Automatic sync stops working, manual sync button does nothing, and the sync tabs button hangs endlessly. Tried re-adding my account and reinstalling. I also tried switching to Fennec from F-Droid and thought it was fixed, but the next day it was broken there too. Maybe something is going wrong when the automatic sync occurs. I hope we get some sort of response here or on Bugzilla.

https://bugzilla.mozilla.org/show_bug.cgi?id=1924544