Subscription expired but its not

Hi, I have had Lightroom for iPad for a while with a monthly subscription .

I know get "subscription expired" and every time I try to use I can't use premium content .

My subscription is up to date and on auto renewal, so no reason for it not to work.

I've tried the upgrade feature within the app, delete product and re install, still no luck .

I tried to report a problem through Apple they say its your problem, please help me

Regards

Richard Bance