We are using Magento 2 (2.2.5 to be exact) using PayPal Express as our main payment method. However it does not allow for creating or editing an order on the backend using PayPal. I'm aware as to why but we still need to be able to checkout customers ourselves using paypal. I was wondering if there are any guides or if a module had already been built to send customers an invoice to the registered email address. This way we could bill customers out using paypal. If no module has been built I am looking to build it from scratch and any help would be appreciated.