Locked out of Roadrunner email account
I’ve had a roadrunner email account for the past 20 years, and in the last six months I’ve been locked out of it - I didn’t change the password but it’s no longer recognizing my password as correct. When I go to reset my password it asks me for the MAC address associated with my account, which I definitely don’t remember. There’s no other way to reset my password and customer service has been less than helpful. Any assistance would be appreciated; this account is attached to virtually every other account I own.