Wait.
And also read the other 500-something comments talking about this same issue
just wait it out. theyre recovering via the date you and others added it to your list (in this case only the already read for now - i don't think the others have started recovery yet)
All you can do is wait right now. It's an issue with all users
Here's another post with more information if you're still confused
https://www.mangago.me/home/mangatopic/21080691/
Nothing, it's the same for everyone... Website seems to be in danger again, so all you can do is wait and hope for it to return. Seemed to have happened before too and it got solved.
Oh, so all users are affected. I panicked, I think it was only happening to me. Hopefully it will be fixed soon.
I just lost all my "I want to read" lists, my "I'm reading" list only has 3 manhwa left, and my "already read" list also has 3 left. But when I open the pages of other manhwa that I have read, they are still marked but didn't appear in the list. It's a shame that my "I want to read" List is still so many that I can't possibly remember them all. What should I do?