i need to modify one of my paid script say i need to know how much do i have to pay that u do it

i paid for kingposter and it haves a module named payment script…
only paypal payment is available but paypal is forbidden in my country and i want to add other payment method like pay with credit card or bank card etc or 2checkout maybe payoneer pls i need help
my email adress: [address removed]

You should ask the author first if they could help you. https://codecanyon.net/user/pandisoft (form bottom right)

Otherwise you may be able to find someone at www.studio.envato.com