If I have time later today I'm gonna modify that text to make clearer that if there are ANY registration problems, go to that form. NOT that it is likely to make anyone actually do it for some jacked up reason.
It's like asking customers to compete a questionnaire after being refused entry to a night club! Far easier for them to find another accommodating venue. Plus instills a bad impression of further possible problems.
Does the error logs and verification not trap incomplete registration attempts?
How about emailing failed attempts?