Yup, happened with everyone and it won't come back. Read this. https://www.mangago.me/home/mangatopic/21080691
Oh yeah I forgot to mention something we all got to know a few days after that. The files in database got corrupted and that is why all of them couldn't be recovered. That's why only the works you added in your list after rating them, came back. The unrated ones are gone. Since then, everyone has been adding things back to their lists manually at their own pace.

I had a 1000+ in there, I don’t know if I’ve come back here to this site for a year (/life), but there were so many comics that I had simply not finished. Please tell me if there’s any way to recover this. Or if it’ll ever come back. All of my comments have been erased/disappeared, but that’s not really the biggest deal to me right now. Help anyone.