Plugin setup

Hello!

The site has a plugin installed and several payment methods. Tell me how to select a delivery method and enter an address on one screen?

That is, step 1 shows the product – ok
Step 2 – payment details (contacts) – ok
!!!Step 3 – select a delivery method and enter the delivery address on the same page – I can’t set it up!!!
Step 4 – select a payment method – ok.

The site where the plugin is installed https://nigirihouse.com.ua/
Photo step 3.1 https://prnt.sc/obkXHikFKsVA
Photo step 3.2 https://prnt.sc/ylhWiIuc60o5