It seems a lot of people are having the same issue
just happened to me too, i got really scared for a second ╥﹏╥
Hopefully it comes back, I think the site is probably experiencing some changes
Panicking right now
Late Update. Thankfully it came back after 48+ hours after this post (totally didn't cry and overthink myself to sleep)
My whole reading list is wiped out clean ( ≧Д≦) I was reading one second and the next second my notifications were empty and so are my reading list! Is this just me or is it a technical issue of the site? Idk what to do ༼;´༎ ༎༽