Payment method

hello, hope you are doing great!
I want to upscale to the pro version so I can use my system on different pc in the same store for example I have two cashiers, I need both of them to have the same version and my system work smoothly on both pcs with the same database
in addition I want to pay using the visa card because my store is in Lebanon, and here in Lebanon paypall is not supported.
I hope you can provide me with the solution with these problems.
thank you in advance.