I can't order xfi pods anywhere

I am on this webpage:

www.xfinity.com/learn/internet-service/wifi/xfi-pod-3pack

I click "Add to Cart" and I get the three dot ellipses forever.  This happened on my phone, my Ipad and my Mac.  I have retried dozens of times.  We need this for my daughter for e-school.

I would buy from my local XFinity store, except they are ALL closed in the 33021 area code and nearby.  

PLEASE HELP!