Why do I have to pay for it again!!!

I bought this dictionary two or three years ago, and it was fine.. Now the old dictionary no longer works - I can open the app but there are no words. So Oxford just took back the product I purchased from them? What right do they have to do that? If its a developer issue, then they owe me a free upgrade to the new version. But it seems like this is the about only game in town if you want a brand-name English/Russian/English dictionary, so I will purchase the new edition. But I will never buy another Oxford product again if I have a choice, and I will encourage my friends to avoid Oxford products as well. It appears to me the company has no integrity whatsoever.

SouthPoleSanta about Oxford Russian Dictionary