In order for your IAP purchases to work on testflight, you need to have your Bank information submitted and connected by Apple. It will not work before that, and you will get the E_DEVELOPER_ERROR.
Of course, Apple is very cryptic in their messages. So it could be something else. I would start verifying that.
I made progress on this. I was able to get it working on one screen but not another. I have been working with Adalo support but they haven’t been able to figure it out yet. Does anyone else have updates?
Cool. Glad to hear it works for you. I have it working on one screen but it doesn’t work on another. My case seems to be a bug in the Adalo component or platform. Support seemed to confirm but they have been able to solve yet.
I would be interested to know more about the bug, @brian-augusto . So you have working in one screen but not on another? how many screen is your app? and what is different in the not working screen in terms of setup?
Regards!
Thanks for asking. The app is maybe 20 screens. I have IAP on two identical pages. The button is in a list and driven from DB. There isn’t a difference that I or the support team can tell. I actually cloned the list and button from the screen that works but it still doesn’t work.