Thanks for the link. I use tablet S6. There is also nothing important. I use secure notes to keep some partly important info.
Since there is nothing important on that email account meaning this is a throw away account ?
 if yes then It is better for you to just forget it and create another one to link all your apps because 
compromised account will likely a not so safe to use again not unless the Support helps you change 
everything but you need to prove your complete ownership first.