Originally posted by Ptolemy:

You can just use Dropbox or any equivalent service and dump the contents of Users\%UserName\AppData\LocalLow\IronGate\Valheim somewhere onto that. (Assuming you can access that file path on the computer you're using.) I doubt this is the best solution for someone in your situation, sorry, it's just how I backup my own game files. Someone else may have a better idea.

i really the operator of the internet cafe showed me that steam cloud are currently in trouble ....so i guess its still possible for my stuff to comeback