Hi,
I am testing IAP with my App, here is what I did
1. Added a Sandbox tester acount at itunesConnect.
2. Got email from itunesconnect and clicked the link in the email to verify the email address.
3. Added code to my App.
4. When launched IAP inside my App, it asked me to Sign in.
5. Input username and passwd created in 1 for the sandbox tester.
6. however, the system asked me "Open Settings to continue sign in with my_email_assress".
7. Opened Settings and it said "To finished signing in, you must create a new Apple ID passed".
8. Created a new passwd, then it said "The Apple ID or passwd was wrong, can not log in"
Why? What is the correct way to test IAP?
Thanks,