Hi Jeremy,
In DNN, SSL is enforced at the portal or page level. The buynow module sits on a page that has ssl enforced or not. The buynow module doesnt do anything specifically to enable or disable SSL I think the issue is an incorrect SSL setup. The following are possible issues with your SSL:
1. Your SSL cert is bad or your SSL cert has not been properly installed on your server
2. In IIS, SSL has not been enabled properly or port 443 has not been enabled
3. Your firewall is not allowing port 443 traffic.
I dont think upgrading will fix the SSL issue but here is the upgrade info you requested for your reference.
We offer 3 months of free upgrades on the cart from the date of purchase. To get the new version after that you have the following two options:
Option 1 - Sign up for the cart maintenance plan
https://www.smith-consulting.com/pd/p... or just purchasing the latest version of the cart.
Option 2 - If you are within 6 months of your purchase date we will send you a coupon for 50% off the cart.
To confirm the issue is fixed in the latest version of the cart you can also download the trial version and then upgrade to the latest build to fix the issue.
Thanks,