For the Webinar issue, try using Fire Fox as the browser to view it in. It will also take a bit to load.
We offer support for using eCart through this forum, and have a serious of tutorials in our tutorial library, for getting started with Commerce, I recommend the eCommerce tutorial series:
if you would rather just get a refund, please send your request to the sales department using the Contact Form:
include your email address and order number in the message.