i was trying to submit my app to the Windows Phone Store, but i got these errors:

In Visual Studio 2013, i compiled the solution as release and not as debug. One of those Microsoft's links (the first error) suggests to add a flag to the linker, but i didn't manage to do that.
Also, the second one regards a bunch of unsupported APIs that i didn't even include in my project. Did someone face the same issue?
Thanks
Please check thirdparty libraries or you code for some API which not allowed for Windows Phone 8.1 Store Apps
For example, I added Flurry WP8.0 SDK in my WP8.1 Store App and I have the same problems. After that I removed Flurry and Store accepted my App