iPad photoshop keep Prompting Subscription/trial, access denied.

I'm on IPad OS 15.6.1

ipad 11" 2nd gen

Recently I have issues accessing iPad photoshop, a prompt to subscribe/trial block my access when I open the APP, I'm an existing Adobe CC paying subscribed user. Tried uninstall and reinstalling, logout and relogin, issues unresolved. Called the regional support, issue unresolved(very bad experience and more confusion). 

May I know if anyone experienced similar issues and found a solution?