Unable to check out with iphone 12 Pro preorder
Hello - I am due for an upgrade, and I have been periodically trying to preorder an Iphone 12 Pro since the preorders became available. When I select the model I want, decline trade-in, choose 30-month financing, and try to proceed to the cart, the "go to cart" button is disabled (grayed-out) with no explanation. I have scoured the page for some required field I might be missing, but there's nothing.
Despite this, I can see that something has been added to my cart (because of the "1" badge on the cart icon), so I try to click directly on the cart icon, rather than trying to get there through the original purchase flow. When I finally make it to the cart this way, I see the preorder in my cart, but 1) the check out button is now disabled and 2) the warning below appears above the Iphone 12 preorder in my cart:
"Looks like you missed a few steps. Let's go back and add the items that'll complete your cart.
Finish configuring your service"
If I click the "Finish configuring your service" link, it takes me to a page to select my TV and Internet plan, which has absolutely nothing to do with preordering my phone. It won't let me proceed without selecting one, and if I do select one, it just takes me to the cart with only the tv/internet package, and no Iphone 12 preorder.
I have tried all of this on a Windows PC, a Mac, and my current Iphone. I have tried it in Chrome, Firefox, and Safari. I have cleared cookies, cache, and saved passwords. Nothing works.
Any help would be appreciated.