How are you. Don't worry, I'm glad you were able to fix it!
I want to tell you that I am currently researching and using in my game an additional plugin that came out very recently:
I leave you his Itchio in case you want to take a look:
https://rabbitteaparty.itch.io/nekogakuen-steamworksapi
Mainly it fixes the Achievements system that for some reason SteamLink was not working, and adds other additional features.
I recommend that you review it and try to see what you think.