They aren’t coming back.
They aren't coming back. The server that contained the lists crashed. The developers were mostly only able to retrieve data that was marked, ie, if you rated or tagged your comics/books. Now there is a belief that the devs are still working on the crashed disk, so you can still wait around for it. But the I think the majority of us stopped waiting and started to rebuild. I suggest your rebuild too and keep a copy of your lists.
FAQ here:
https://www.mangago.me/home/mangatopic/21255174/
Only rated/tagged works are coming back. We don't know if they're still recovering stuff.
I am personally advising against editing your lists right now, but I can't stop you. So please just exert caution and create a backup at least.
Does anyone have any updates on when our lists are going to be back to normal? It’s been over a month now