Board Thread:Troubleshooting/@comment-118.208.81.26-20180601145700/@comment-35472906-20180620115642

This drove me crazy. I found that if I TT, there are times that a purchase transaction cannot be completed. Apple may be confused as to day/time. Maybe recognize it as a Trojan Horse, or something like that. Ensure your Date/Time is accurate.

Go to:  Settings -> General -> Date/Time.

Good Luck.