I am still looking into this issue, however, I think it is a bit different than I initially thought.
I just had a user over the weekend complaining that they could not access a course they purchased. I looked into it and found their purchase which was successful, however, they were not enrolled in the course. This time it was not a new account. This account was old. It was created 2 years ago, but they never purchased a course. Last Friday they logged in and purchased a course. However, they were not enrolled in the course.
Not sure at all what is going on here. I am going to look over all of the recent purchases on all of the websites I manage and see if I can figure out what is happening.
Have anyone out there ever seen this behavior before? I haven't and this is new for these websites.