Can't buy new phone online

Hello,

I'm trying to upgrade my phone. When I select a phone from the options provided to me, I select my account, skip the trade-in option, then arrive at the Protection Plan options. When I decline this option, a window pops up asking if I'm sure I want to decline. I select yes, and nothing happens. I don't advance beyond this screen. I've tried selecting a protection plan, as well as clearing my history and cookies, and trying 3 different browsers; I always get stuck on the protection plan page. Is this a problem with my account or the phones I can select? Thanks for any assistance.