How to checkout without choosing a payment method?

Question

opencart

Website on the Opencart 3 engine.
You need to make a quick checkout, without choosing a payment method. Maybe there is a module?
It is necessary that there was a form in which you need to enter the Name, email, phone and delivery address. And that the module would work without choosing a payment method.
I used the paid module, "quick checkout". But he stopped working. Even though it worked before.

I read on the Internet, it seems to be related to geo-zones. But I did not understand where and how to set them correctly.
Now I don’t know what to do, either buy another module, or somehow solve the problem with geo zones.
But logically, if the problem is with geo zones, then another module will not work either.
Help me to understand.