Need help on APP login

Can anybody give me some help on logging into my account on the APP？ It keeps giving me errors like "password is wrong". I have tried:
1）Reset the password through "Step 2: Edit App Password" in the APP task.
2) Retrieve the password within the APP and got "Data must be a string or a buffer".
3) Delete and reinstall the APP several times.

None of the above methods works...
This is a problem with the current account, and my email is the registered one.
Thanks!

xianzhi

It works after I reset the password (the first method in the post) again today. I guess it didnt work before maybe due to I set different passwords for APP. Today I reset it by using the same password as my account and it works.