Payment methods not working on test site

Good day,

I was wondering if anyone could assist.
We have a multi-vendor CS-Cart website, version 4.14.1. We currently run a test version of the website which is a replica of the live version of the site.
We currently integrate with Paystack as our payment gateway, and this integration is currently working on our live site.
However, when trying to test payments on the test version of the website (selecting PayStack or any other payment method besides COD in Payment Methods in the admin panel), we get an error message at Checkout saying “There are no payment methods available, so you cannot proceed to checkout”. Is there any reason why this could be happening?

Thank you for any assistance.


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