What payment processor / gateway this site is using ?

There is this website that I’m interested in know what processor they are using I tried scrapping and found whop? But I’m not sure can some one confirm please and what method of cloaking are they using?

Checkout page: https://host4k.us/step/1m/

Please forgive me if this is the wrong place to post.

you can know yourself , try filing all the details , and take a look at the URL it takes too , or a final checkout button there you can sense what's going on ))

Thank you, that’s what I ended up doing. I thought it was an actual processor but it’s just a fake checkout page that leads to WhatsApp.