We've been encountering this exact same issue since October 16th. iOS 14 devices with sandbox test accounts can perform IAP fine after being asked for a password twice, but devices below iOS 14 are reporting the error code 0 'Cannot Connect to ITunes'. Our app was build with XCode 11.3.
Has anyone been able to find a solution to this? It's really hindering testing.
With our team spread out and working from home, we are unable to follow the instructions to get the logs required to submit a bug report.
GateByte
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