[HELP] I Can't Login & Can't Change My Password in My Old Account

[Farre Sir.]

Previously (last year), I was able to login to my old account and also I could change my password
But now I can't, even though I entered it correctly

• Login = "You have entered an invalid username / password combination"
• Change password = "You did not enter a valid email address"

The video:
https://drive.google.com/file/d/16oL5U42...sp=sharing