I tried to create a separate account at the WindFarm / DAB Radio event but it would not work properly.

We can only speculate that something is not working properly at that host. This is something out of our control. It has been our experience when that host system is taxed with many visitors, the host will slow down and possibly not process new / last minute registrations fast enough to keep up with demand.

What we do suggest is that you sign up well in advance of the DAB event (http://www.blogtalkradio.com/dailyaudiobible).