- Solutionselected by SamuelD
This problem occurs again and again, and the payment method in another country sometimes has an influence.
https://support.apple.com/de-ch/HT201389
Some of your previous purchases (apps, music, movies, TV shows, books, etc.) may not be available in your new country or region. Certain types of purchases or content are not available at all in some countries or regions.
To ensure you can access your previous purchases in your new country or region, reload your previous purchases on any device which you may want to view the purchase before changing your country or region.
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