Payment page redirection from shop A to shop B

Hello everyone,

I'm currently seeking a plugin or solution to implement payment redirection between two online stores. The challenge I'm facing is that my products from store A are not accepted by the payment processor of my store B. Therefore, I'm looking for a method to redirect customers from store A to store B at the time of payment, while ensuring that the user experience remains seamless and transparent, meaning that the customer doesn't realize they've been redirected.

I understand that nothing comes for free, but I'm seeking quality advice and assistance to find the best solution to this issue. If anyone has experience setting up payment redirection between online stores or has expertise in this area, I would greatly appreciate any help or recommendations you can provide.

Thank you in advance for your attention and support

Maybe you could try Moyidata.com payment claok.
When site a initiates a payment, it redirects to site B, which submits the order to the payment gateway.

Do you own both stores?

If you do, then you don't even need a redirect, just run the payment B script on your A site server