Please help, Cant login Instagram on Android mobile but works on Web

Hi guys, please im really confused what Instagram may be upto.. I just noticed i cant login my Instagram account on the mobile app..
It says "Sorry there was a problem with your reuest" but other account login smoothly on same app.. and that particular instagram acc login without issues on the instagram web..
Somebody should help ,e please,

give your account a break for 2 days, then try to log in by app