I can not connect my paypal account to my gameflip account

I had a gameflip account a long time ago, but I do not remember the password and the cell phone I registered I do not have anymore. I’m trying to log in with the same paypal account but I can not, I know about the terms that I can only log in once, but I really need to use this paypal account! How do I log in with it? Invite new account code: PQAH67. (I can not remember nor can I get the invitation code from the old gameflip account). I await an answer.