You need more work in developing the site to be perfect, there are a lot of things that have to be modified.
it's better to create a topic and make exchanges manually, rather than creating a site.
It appears that you have copied this site with some modifications
[1]. Check the Terms of Service page.
Can you add support for Payoneer? It would be awesome if I can exchange my Payoneer for Bitcoin.
I don't think the direct exchange is possible as Payoneer's Terms of Service prohibit dealing with cryptocurrencies.
[1]
https://www.marchanger.com/