Authentication was completed, but data was received as null.

[Shihun]

Authentication has been completed with Login With Amazon, but data is received as null when calling the Web API below.

I sent two emails through Contact Us, but did not receive a response.
I wonder if I’m getting the above results because the Amazon Music API isn’t available yet.

[Edy]

@Shihun have you used the music.amazon.com application? if not, please go and do a basic onboarding, you can keep the same tier
Please try again afterwards. It should return data with a user containing id and playlists