You need to integrate
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into magento 2 shop with IPN.
If you have your own module that works with payza its welcome as well. Other suggestions welcomed. Basicly I wish that client can checkout and choose checkout with payza.
Note: you will be the owner of plugin/code so you can resell it to other clients...
HI,
I have more than 6 years experience in Magento. I have developed alot magento 1.x payment modules.
I have developed 2 payment modules for Magento 2.x. I can help you to do this module for sure.
thanks