I got a mail from Microsoft because the app is not compliant:
The app description does not include information about the types of in-app purchases offered and the range of prices.
So, an update was neccessary to update the description in the store.
This release will not give new functionality. It will only inmprove the stability. For example by leaving the app or for the Tile.
I am working on HD images for the shifts. I don`t know if I should use 80x80 pixels images or 160x160 pixels images (currently I am using 40x40 pixels images).