What more proof can I provide that I registered in the UK when I provided a picture of the registration? I have emails from the Adkinsbet confirming that the UK was in fact listed as a country on their registration list, which I am also happy to provide.
Yes, you provided a photo of your registration page during registration. But it's really very easy to edit it by inspecting. (I am not saying you are lying.) Just ask to provide if anything more proof you have so that it shows strong.
I have already referred this topic on their ann thread to response here. So I think you will get a response about this issue soon.