Hello I have the problem that when I make a payment to a subscription within the application I get an error INVALID_CREDENTIALS this happens when I download the TestFlight application. I was testing locally on a physical device with SandBox accounts and it works fine and I don't get the INVALID_CREDENTIALS error, which causes me confusion because it doesn't work in TestFlight. To be sure that I use the necessary API Keys, I recreated a second project with new Apple Store Connect API Keys and I still get the error in TestFlight. What could be the problem?
