Lost my PBE account

so I am trying to get back my PBE account which I have linked to this current account, as i needed to meet requirements to get the said PBE account. when trying to log into the account i am unable to do so and i don't receive emails regarding the password change. what should/can i do?

new to using these boards, so i apologize if this sounds stupid or if i posted this in a weird place.