Since yesterday I've noticed the keywords for one of my apps have stopped working. None of the searches I've previously tried return my app anymore, and you can only find it by searching for terms in the name of the app itself. This has caused my sales and store ranking to plummet. I used to be the #30 paid app in the category, now I'm ~70, and still dropping. Has anyone else been experiencing these problems? I emailed email@example.com but they often take a week or more to get back to me, and by then I will have lost many sales. Is this the kind of thing that will "fix itself", or am I at the mercy of the sub-par app store support?