Here is a problem i never had on linux but i started getting on windows.
Some games say they are unable to sync (seemingly random), when i start a game the save does seem to have downloaded, but i cant sync it as it is right now, even doing so manually keeps throwing the same error
The only time I had sync problems was when I was connected to a VPN. Do you use one by chance?
no, i have never used one mroe than once a couple of years ago