There is no way to change the account region. Also there has been no active live chat specialties for the last 3 months. The apps are inconsistent across devices and out of date. The Adobe App Store is all a mess on iOS with multiple versions of the same product. No support for android whatsoever?!!!
>no way to change the account region
Make sure that EVERY DETAIL is the same in every place you enter your information
-right down to how you spell and punctuate the parts of your name and address
Change/Verify Account https://forums.adobe.com/thread/1465499 may help
-Credit card https://helpx.adobe.com/utilities/credit-card.html
-email address https://forums.adobe.com/thread/1446019