Split from this thread.
I'm unable to upload a custom gamerpic either. I've been trying for the better part of two days. Did it through the console, iOS app, and Xbox app on Windows 10. The apps say that the picture has been uploaded but needs to be "reviewed" and never gets changed. It's only the logo from the game Mirror's Edge, so it in no way violates any sort of community standards. Is this perhaps related to the outages the service is experiencing at the moment?
Edit: The image I'm trying to upload as my gamerpic is the same one as you see on my forum profile.