krashd: Is there no way to just reset the library then? My client died halfway through integrating my hundreds of Steam games and now I can't integrate anything else, can't remove an integration, can only see half of my Steam games and can't add anything manually - it's as though the database is just dead or crashed and rebooting does nothing. I don't want to uninstall and reinstall the client because underneath it is my previously perfectly working GOG 1 client so I just want to know how to delete the database and let the client find everything again.
gog 2.0 saves your library data to gog servers (cloud), if you want to reset that data you have to contact gog support asking them to do so. there's no features in old galaxy client to reset that data.