I have a universal app that runs on iPhone, iPad, and Mac. And I offer auto-renewing subscriptions that are universal purchases. So subscribing on the iPhone should also activate the subscription on the Mac app.
I noticed that this purchase syncing does not work in TestFlight. I've read that Family Sharing does not work for TestFlight sandbox purchases.
Are purchases made on TestFlight generally not synced across devices? Or am I maybe doing something wrong with handling or setting up the subscriptions?
If TestFlight does not support syncing of purchases, what is the recommended way to test the cross-platform activation of Universal Purchases?