Problem in RAW (Premium not updating)

Hello

Just to cover all the bases, can you please go into your iTunes subscription history and confirm on Apple's side that a valid subscription for Lightroom exists?  

I see you have tried Restore Purchase, and it didn't work.  If an error message is shown, can you share what the error says?

Assuming you do have a valid Lightroom subscription, please try Restore Purchase one more time, but try these specific steps: 

Sign-out from iTunes&App Store via the iOS settings. Just navigate to iTunes&App Store and long-press your apple id which brings up the option to sign-out.

Afterwards start Lr Mobile again, try Restore Purchase again, and once prompted add your apple-id and password.  

If this doesn't help, please write back!

Have you tried to restore purchase?  (see link below)

https://helpx.adobe.com/uk/lightroom-cc/kb/lightroom-mobile-in-app-purchase-issue.html

Can you give us a bit more information? A screenshot of the message? What platform are you on? Have you signed out & back in?