The App Tells Me Some Weird Stuff

some context first:

I have been using the Xbox App for like 6 months, everything ok, but, this week, when I did upload a profile image from my phone, the next day it was erased (the image did not contain sexual or gross content anyway) then, when I tried to upload it again,
the app tells me, in a text box, that I need an adult account, but my account is for adults, OR, how I make my account “For adults”?

The image is for christmas purposes, dont ruin it, thanks.

Sincerely Yours, ya boy, bgd.

:)