Old gamertag still showing up

Hello, My name is Jesse. I'm an Independent Advisor and a member of the Microsoft community and I'd love to assist you today.

You have to change the classic gamertag in the options before you purchase or use your new gamertag.

The classic gamertag is for the games that don't support the new gamertag system and the new gamertag system works in only a select few games supporting the feature

how long ago did you change it?

Didnt helped unfortunately

Anyone?

Me either it actually made it worse, my old gamertag that I paid for is showing up still and it shows for all of my friends on friends list. And when I look at my account it says my old gamertag then my new gamertag below it but smaller.

All it is, that they have changed their gamertag, and their old gamertag is still showing.

You actually show as having a classic gamertag and a new gamertag. So some areas will still show the old gamertag (classic gamertag).