Hi again @TBS2022 !
Thanks for getting back to me with that extensive further info, and apologies for my delay in replying here as I have been away from work for some time now.
It looks, based on the info you have shared here, as though this type of integration would necessitate the services of an Expert developer to put in place rather than the use of a manual payment method.
I’d recommend you spend some time checking our Expert Marketplace here to see who you might consider consulting or hiring for this project.
Can you tell me a bit more about what you’re selling, and anything else you’re working on for your business currently?