I opened support ticket #348652 because I have the same problem as all of these poor people.
A few things I would like to offer as feedback:
I have been amazed by Evernote free for as long as I've used it. I have recommended it to so many friends that I should probably get a full time salary from Evernote at this point And as soon as I go premium and pay for the service, I get frustrated. First step into the payment scheme, bad vibe. In terms of UX this is probably something you want to avoid at all costs.
Researching the problem made me realize (via this page) that it has impacted many people over close to 4 years now. So not only is it a bad experience for any person who loves Evernote so much that *they are willing to pay for it* but it is also a problem that Evernote has not focused on to the point of killing it for good. Does Evernote really want a 6-page forum post describing failure to meet customers' expectations as the first Google result when people search "evernote premium iap"?
I realize that this forum discussion highlights the responsiveness of some of the Evernote staff on the board (although the 29 jan post is unanswered) but ask yourself this question: Would you rather have a good track record of responding to problems? Or no track record of IAP problems?
Maybe the problem is with Apple and the App Store. But an Evernote customer would gladly respond "not my concern, just fix it". Apple is not offering subscriptions to Evernote. It is Evernote which is offering them via IAPs.
It turned into a bit of a rant but that might be the IT Support Manager in me taking over