I don’t think so!! I’ve seen some people on Reddit saying it’s not actually affecting it so I just hope that’s true
Not sure, last time this happened I didn't touch anything for a while (went through the lastest update pages manually and just read the mangas of the day that way) and everything came back eventually, so I'm not sure what would happen if you added stuff before it returned. Personally I'd wait and just create actual lists yourself (just press the lists tab on your homepage to create a list) and store them or bookmark the chapter of the manga you read and wait until your "Read, Want to Read, Will read" lists return before adding things to it again just to be safe. But this is just an opinion cause I really don't know what would happen.
I added without even realizing it. I hope nothing happens
I wouldn't worry, the worst that can happen is that what you saved gets pushed to the back once all your mangas return so you might have to go through the list and search for it. I doubt it would interfere with your entire lists returning, so don't worry and just keep doing what makes you feel grounded and comfortable. Overall your lists will return eventually regardless.
Whould it be bad if I a put some Mangas as reading labels when the things are down (like the thing you put reading, want to read)