Using "generated password" means you're using the account model / cloud model. No way to recover your account if you have forgotten your password (or perhaps you're trying to login to a wrong username?). "I can see the balance of my coins inside it" doesn't mean you can move the fund, since account balance is public. If you've stored your password somewhere, please check the length of the password string, if the length is less than standard, perhaps can try to brute force it by appending missed characters.
PM me your account name and the password you've saved, perhaps I can help.