***This issue has been resolved for users accessing https://order.bayphoto.com through Microsoft Edge on Windows 10.***
If you are accessing the website shopping cart interface through Safari on Mac OS X 10.10 or 10.11, there is a known issue where the Add to Cart button does not respond after clicking it. A spinning wheel appears over the Add to Cart button, and no other buttons in the ordering interface will function, but the page can be refreshed or closed altogether.
Unfortunately, as of right now we do not yet have a fix for it, so the best way around this problem is to use another browser, preferably Mozilla Firefox or Google Chrome.