This is a very promising extension and exactly what I was looking for. However, I didn't manage to get any support. The developer offered to help, but then ignored my six follow up requests over a two week period. I offered to pay for their time on top of the extension's price, but received no response. Then I asked them if they could refer me to a third party that could help, but received no reply.
The extension is now useless and I have no way of getting support. I would ask for a refund but I suspect I would not get a response to that either.
I don't know exact case, but if you ask for support in last week, i can say only one: we are overloaded and our support is slow. If you want to help you, send me email with your problem and we wil do the best to resolve your problem in next days.