kg999 What will you see if not logged in?
First, retype the username and password; even one character wrong will prevent login, so type by sight instead of copy-paste; many Dhaka users fix the problem by changing mobile data.
Second step is to clear cache; if still not, reset the password, and tell support the phone model.
Small Tips
kg999 If you have trouble with Login, switch networks once; the difference between Wi-Fi and mobile data is often the cause.
