Beyond upset

I downloaded the full version of this dictionary a while back. Paid for the entire content. However, now that I try to open the app, it says it requires and an upgrade.
I do not wish to pay again. And I will not pay again. If I have bought a dictionary for over $40, I expect the developer to have the decency to mention that the license will require an upgrade or whatever in the future so that I dont buy the darn thing in the first place.
So disappointed.

AimanAwaiz about Taber's Medical Dictionary, v1.15