K, i'll try.. hard to explain in a post. Im not sure how it works in any other browser but... If you using chrome and on the checkout screen you need each of the
three boxes (shipping, total, and cc) to load without error. When you first get to the screen you have to select shipping method. Once you select it all the wheels start turning. If you get an error message (pop up box telling you it had problems processing/configuring) for any of those wheels you wont be able to check out properly.
What I did was select parcel shipping... wheels turned... got an error... then selected priority shipping... got an error.... kept doing this until the shipping selection, total, and credit card boxes all came up with no errors. Entered my information at this point. I then hit the checkout button and error boxes popped up but all my info was still there. I had not received an email and my card hadnt been processed at this point. So waited a few moments and hit checkout again.... Same errors. I repeated this about 5 or 6 times until the order finally went
through ( checking my bank and email each time to make sure an order didnt process already before I tried again ).
Im assuming this is going to be confusing but maybe it will help someone. It worked for me.