The way you entered your username and password for the first time, during the registration process, will be the only valid way for each login attempt.
EXAMPLE:
If, during the registration process you entered the password “mypassword” and if each following time you try to login using the password “Mypassword” (where the first letter is a capital letter, different from the word you used for the first time), the site will reject you.
If you enter a incorrect password three times, you will need to contact [email protected] to reactivate your account.