Hi @bkhan110,
Sorry that you ran into issues here!
Registration forms are something that AWPCP doesn’t handle. We believe, like most plugins in WP, that we do one job and do it well. That job is handling classified ads. There are registration plugins that handle the issue of registration forms, like Restrict Content Pro, MemberMouse, and so on. These plugins can be used to handle that aspect and then you can tell AWPCP which URLs to use in the settings for login/registration. If you don’t do that, then AWPCP will use the DEFAULT ones from WordPress, which is what you see now.
For payment gateways, AWPCP supports a number of them–PayPal, Stripe, PayFast, 2Checkout. We don’t have support for every gateway, but we do have instructions on how to customize this yourself if you get access to that gateway’s API: https://awpcp.com/documentation/#custom-gateway
I hope that helps.
Please let me know if you have any other questions or issues!