Microsoft Store app is incompatible w/ my 1520 on Cyan

what the h&%$ are you smokin' ?

I have an AT&T Lumia 1520, updated to Lumia Cyan (after 3 months on Dev Preview) and have NO issues with the Store.
Not sure what you're seeing ...
 
I think the OP is talking about the app called Microsoft Store. It's an app for information about the Microsoft retail stores and online store as well (I think). I used to have it installed but it wouldn't work with 8.1 (developer preview). Now I notice that it is no longer published.
 
I think the OP is talking about the app called Microsoft Store. It's an app for information about the Microsoft retail stores and online store as well (I think). I used to have it installed but it wouldn't work with 8.1 (developer preview). Now I notice that it is no longer published.

Yes, this is is. I wanted to search Microsoft's online store for the Lumia 635. That is why I called it the MICROSOFT store app instead of Windows Phone Store. I guess it's an 8.1 thing, or maybe it actually is no longer published at all.