I bought this module a little bit ago through the DNN Marketplace.  So far it has been nice.  Although I have one issue.  I can't accept payments!  When a user goes through the process to make the payment for the subscription they have a page where they enter in their information (address, city, country, state, zip, etc).  When the payment is suubmitted to Authorize.net I get back the following message:
 
Bill to Country is Required
 
It is doing that even when the Bill to Country has been specified.  I looked in the Event Log and saw the Query String info it is sending to Authorize.Net and sure enough it is missing the Country information in it (lists the x_billtocountry parameter but no value for it).  Do you have a fix or an idea as to why that is happening?  I need to get this resolved asap.  I am using version 2.6.0 of the module.
 
Thanks for your help!