NMI (Network Merchants) is releasing a new modern interface starting on March 19th. Below you will find some helpful guides to help you use the new interface.
Using and Customizing NMI Guide
Running a Credit Card Transaction Manually Including Voids and Refunds Guide
Running an ACH or E-Check Transaction Manually Including Voids and Refunds Guide
SyncPay and Quickbooks Integration Guide
If you have any questions, feel free to contact us.