Can't enter overwatch server

Last week, my overwatch account’s level drops from around 100 into 1. I thought this may be a bug of the display so I ignored it, but this week I can’t even enter the overwatch Asia or American server. The only server that I can enter is the test server and now I am afraid I won’t be able to enter the test server too in the next week. (0xE00F00B0)