Can’t place order because it says “having technical difficulties”

I recently tried to add a new line to my account then I went to do it I picked out the phone I wanted to add from the Xfinity Mobile website and after that I went to add to cart the website notified me by saying “having technical difficulties.” Unfortunately, my question is can I receive help or advice on this issue?

*Please Note* I tried switching browsers and clearing my data cache for both browsers it still wouldn’t let me add my potential order to cart.