As mentioned above, should be fixed soon. I actually have a Xiaomi phone with the Xiaomi.eu ROM installed here which we test with Hue Essentials. The Android 11 device controls can be a bit difficult to set up because of how they were implemented on the edit screen. See also: Quick Access Device Controls (Android 11). If you have any questions about this, please let me know.
You sent all the information we needed by email, thanks a lot.
Not possible at the moment. The only payment methods which are available at this time on Android are the Google Play Store and the Amazon Appstore. A redeemable code won’t work as that still requires the Google Play Store app.