From what I am gathered so far, CS-Cart has no intentions of keeping up with Amazon payment methods therefore making this platform useless to me. I contacted amazon and indeed they are no longer signing new accounts for " Pay with Amazon". They did direct me to other platforms that do support their payment system.
Among a few, I just looked at OpenCart as an alternative and the one thing they do offer is free integration with the Amazon "Login and Pay with Amazon" module. I contacted a developer and they will develop the add-on but at a steep price. For what they will charge I can go with OpenCart and customize it to my needs for less then what they will charge and still get the features I would normally use in CS-Cart.
I guess my point here is, for the folks at CS-Cart to disregard updating the Amazon payment feature that is so important to some of us, is just saying "Go somewhere else" and that's a real shame..