I've started to have the same exact problem with my Nokia Lumia 920. I feel it's part of MSFT plan to discontinue Windows phones. Too bad, I've been a great fan of Microsoft, I just wished they did things better like providing early notifications on the phone about their plans and providing a solution to transfer all our data to Android or iPhone. Another solution could be to allow us to access the phone's full memory and the apps' memory so we can extract all the data.
@Microsoft, pls help, pls extend the store life for a few more months or provide us with solutions to transition easily to other platforms.
if Microsoft doesn't help, then I will not trust its future services anymore, especially those that needs my data, as they are showing they don't care about their customers and fans. The last thing a user want is to have all his or her "data life" ditched away without ways to save and transfer to other platforms.
I would support and push all state representatives to push laws to regulate tech companies as utilities from now on.