recently I got a bunch of DLCs for Cities Skyline and it seems they don't sync correctly. I see them in the library on steam though... they don't show up on my profile page (which I think GG uses for sync?). What can I do with it?
Currently we're not able to sync most of DLCs from Steam, because they're not visible on user profile, so there is no way to detect that you have them. You need to add them manually to collection on GG.deals.
Oh, that's a shame. Thanks
There was a site that allows to sync dlc and check which one you don't own -> http://steamprices.com
Unfortunately site is down now. However it means there is a way to do that even if you have to copy some Steam's data manually.