Subscription Problem for iPad

Hi there photoshop community!

I have a query concerning photoshop for my iPad. Near the end of last year I bought a subscription with photoshop paid for annually, which I could use on both my iPad and my desktop to edit and create content. I've been using my iPad for photoshop editing now for the last few months and have recently this week come up with problems. I've upgraded the apps and found that I can no longer use photoshop on my iPad without now adding to the already paid subscription for the year. I can see maybe things have changed, but I had received neither a warning nor any indication that my already paid for subscription would now only be limited to my desktop. Has anyone else got this issue? I think I should at least get my year's worth of access before they require additional payments.