Altera training videos no longer work in FireFox

Any time I try to run the Altera training videos found here:

https://www.intel.com/content/www/us/en/programmable/support/training/curricula.html

using FireFox and Windows 7 Pro, I get an error when I click the "Register Now" button:

Request method 'POST' not supported

It works fine on IE.

And of course, as usual I was not able to find the above site via the Intel website. Had to use a google search "quartus online videos fundamentals". Come on Intel.