Integrate/Google Pay Gpay into Woocommerce Checkout Page and Product Pages using NMI gateway api.

I have an NMI gateway account and a Google Pay business account. I am currently using the Woocommerce shopping cart platform. There is currently a "Custom Google Pay" plugin installed, that has a few bugs. You can see and test the product page button here: [login to view URL] Bug issue 1: The flow of this Gpay button works properly and creates a Woocommerce order, however, IT NEVER hits/captures/charges in the NMI Gateway. 1) Solution 1 : Fix bug so that Gpay button flow works properly and charges the order through the NMI gateway. *** The currency is currently set to display in Euros in the Woocommerce store. When the "submit order" button is placed or the transaction is sent via API to NMI gateway, the transaction must be captured in USD (not Euros). This is because NMI will currently only process in USD however, the store needs to be displayed in Euro. *** 2) The GPAY button shall also be placed on the checkout page "before/above the billing details/information. 4)Lastly the plugin should be easily transferable and installed in other Woocommerce/Wordpress websites. The current website being used for this project is : [login to view URL] , more specifically you can visit this product page to do the testing for the sample orders: [login to view URL] I have all the Integration documentation with option of integrating via the Payment API direct post or [login to view URL] , documentation will be provided , example: [login to view URL] Google pay documentation can be found here: [login to view URL] Please DO NOT suggest using a different plugin such as stripe or braintree, WE will not use those services and NMI is the gateway this needs to be done with. Thank you for your understanding.