Site is collecting some orders with no names or address fields completed!

Hi,

I'm taking online orders using marketpress and appointments+. The trouble is some of my orders are coming through with none of the names or address fields completed. Fortunately I can get the required details from the auto confirmation email in Appointments but it's not ideal.

I've seen one other thread which suggests it could be a caching problem. I don't have a caching plugin nor have caching enabled in Appointments+ plus it's possible my host is? Can anyone help?

I've opened up support

Regards
Kieran