Reloading on Checkout page

Hi,

Whem I have the ‘PostNL bezorgopties inschakelen’ checked in the options at the Checkout tab, it doesn’t show up and the bank/delivery section keeps reloading all the time. See video -> https://www.awesomescreenshot.com/video/991595?key=4e00c1cf37984b210ce53a4f73fea070

It’s impossible to make an order. Is it possible to fix this?

Thanks!

The page I need help with: [log in to see the link]