Need PSN help

Buying Arcanine from @Creature

I changed all the dets ect.. for it as well as Sign-IN ID but this email pops up on the "About: Arcanine" Page therefore Id like how to get that email changed since its not the login email, before I send payment to @Creature

Have you tryed either
1.) Logging in on your PS3/PS4 & under account management there should be that

2.) http://account.sonyentertainmentnetwork.com/