Hi osros
Glad to hear all is now going ok.
If you are new to SH5 look > > HERE << STEAM is not compatible with the essential application TDW’s Generic File Patcher
Highly Recommended SH5 > The Wolves Of Steel Mega Mod > Includes Optional KSDCommander And Working Enigma M4 Machine:salute:
Peter

My issue is different
 

I have had the game for a couple years purchased of steam worked fine uninstalled it recently went back to it and got u connect everything started fine clicked on silent hunter 5 and and an error pops up it says "please start the game you want to play instead"

Welcome aboard!