Please read the FAQs, both posts have all the information you should need, I also recommend reading the comments (yes, there's a lot, but there are relevant answers to questions and concerns you may have), reading them will clear up any confusion and also reduce repeated questions that have already been answered :) with that being said, reading lists are currently in the process of being restored, it's just taking a while since there's so many of us, and so much manga.
https://www.mangago.me/home/mangatopic/21080691/ https://www.mangago.me/home/mangatopic/21092806/
If you've already added them, just leave them as they are. Making too many changes may cause issues so it's best to just not risk it and leave them as they are now. No ones really seen any issues (I personally panicked and re-added 300 of my manga, but I haven't had any issues with my already read list being restored) it's just for the sake of reducing the risk while the sites experiencing a lot of problems.

Noooooo all my manwha savings goneeehow to recover them??i had 1.5k saves 300 current and 1.8k read