Paulap78 If this was Google playstore then:
*enter the settings on your device and click on "Apps"
*Then, please, find the Google Play Store app and tap on it
*Select the "storage" and tap on "clear cache" and "clear data"
After the procedure with both "clear cache" and "clear data" is completed, please, restart your device (turn it off and on). Then, please, load the game and leave it opened for a few minutes.
If that does not work then contact support and ad screenshots of purchases.