Connecting payment to the site, which one to choose?

Question

CMS

Hello.
It is necessary that in the payment system you can add a product (I will sell e-keys) and receive a link to purchase this product. And then I will add this link to my site.

Answer 1

https://www.plati.ru/, for example.
Previously used for just such purposes.
Now I have written my site for generating and issuing keys and I accept payment through https://www.walletone.com/ru/merchant/