All of my notifications disappeared in the bell symbol. A thing that I used a lot to find older messages that I got no time to see in the right moment. There was a lot of messages that used to be, now nothing but a empty notification box in the bell. I lost a tweet that I wanted to see a lot, nothing can bring it back again, like the others that disappeared... Another issue that I saw it's for searching users, I wanted to find someone else that I know the account name but nothing happens.