Question: Apple ID not valid
I have forgotten the password for my apple ID (email@example.com). when I use the 'iforgot' website to reset the password, it says the firstname.lastname@example.org is not an apple ID. I put in my first name, last name and the gmail account to find the apple ID and it pulls out email@example.com as the valid apple ID. I try again with the same firstname.lastname@example.org apple ID to reset password, it again says it's not an apple ID. I am stuck!
iPhone 8, iOS 11.2.6