I wanted to integrate Paytm api in my project to make secure payments on my MERN stack website. But test api keys are not getting generated on paytm website.
I tried opening site in incognito mode as well. Is there any solution for this? Or shall I go with another payment gateway aggregator?
You need to have a business account for test keys, have a look at official documentation.
I would recommend you to use Stripe as integrating it is simple and they have a lot of examples for it too.