i’ve tried viewing my purchase history because i noticed that i bought one (1) song but was charged twice. so i went to settings and tried looking into that but i get a page that says “BAD MESSAGE 400
reason: illegal character CNTL=0x11”
i have no idea what it means
iPhone 6s Plus, iOS 15
See if this helps: https://support.apple.com/en-us/HT204088
You can also go to reportaproblem.apple.com
Here are several topics about this issue with responses from Community Specialists:
https://discussions.apple.com/thread/252430618
https://discussions.apple.com/thread/252243429
https://discussions.apple.com/thread/252333857
https://discussions.apple.com/thread/252855091
https://discussions.apple.com/thread/253371094
I suggest trying to repeat whatever it is that is producing this message and see if it persists. If it does:
Contact Apple. Click here --> https://support.apple.com/choose-country-region Select your country, then a product. If you don't see one that handles your issue then keep experimenting with selections until you reach one that gets you a chat session or a telephone call and get the representative to redirect you.
or:
Contact Apple for support and service --> "See a list of Apple phone numbers around the world."
Click here --> https://support.apple.com/HT201232
viewing purchase history
