I don't ask for a password when I try to enter S*gsot (iPhone)
If you are trying to log in to S*gsot from iPhone, but the screen is blank without being asked for the password, what you entered previously will be remembered, and even if you change the password you will try to log in with the previous password .
Turn off "Automatically enter password".
(Or, "Delete" the password stored in "Website and App Password".)
Settings> Passwords and accounts> Password autofill