Tapatalk & profile edit

Is there a way to edit profile info on Tapatalk?
And anyone know how to change the resolution on pics on a Windows phone? I can't upload some pics because the files are too large.
Sent from my Nokia Lumia 625 Windows Phone using Tapatalk

Ok, I did the profile edit on my pc instead, I believe my avatar is visible now.
But I'm still not sure about the picture resolution. I want to attempt a tag in GTA photo tag, but fear my pic won't get posted as only half my pics in my test thread posted.
Any suggestions?
Sent from my Nokia Lumia 625 Windows Phone using Tapatalk