I've noticed a few issues and I'm not sure if they're related.
1) My Training/Puzzle score on the mobile app is different from what I see when I access
lichess.org directly through a web browser.
2) The android app will say offline when I'm connected to the internet and I've no way to force it to reconnect.
3) The puzzle/training I get when I access the browser/android app are not the same (not sure if they ever were, but seems odd).
In regards to 1, I am getting this problem as well on my iphone. The lichess ios app has a completely different puzzle rating from the lichess browser site. Right now my phone is still showing the rating I had yesterday, even though I've solved several puzzles since on the browser. Even the recent puzzle history (the red and green squares) are completely different.
Similar problem here: the webpage gives me one score and in the android app I'm stuck at another, but only when I access it via the three buttons at the bottom left. If I press my user name via the sandwich button the correct score is given. I can do puzzles on both platforms alright.
It seems one score is stuck and I would have to perhaps delete the app cache data?
I'm reluctant to do anything that may interfere with my hardwon scores ;-)
I am having the same problem on ipnone. Rating on the app is not updating. Nor does it show if I've solved a problem.
As a fourth problem:
4) When I do puzzles on the mobile phone, my score in my profile and the graph from the options on the puzzle screen don't update either.
Same problem I think caused by training on more than one device. One device stops updating.
Puzzles have been broken for at least four versions. I've posted about it many times and have never had a response from a developer. Puzzles are obviously not a priority.
I went ahead, force-stopped the android app and deleted its app data and cache, wich seemingly didn't resolve the problem. But a few days later it seems to have resolved itself, perhaps a new version?
Still have problem with sync. Note 5.
I noticed that budget as well, also, I can't spectate games anymore in app.