Brand history that still hits search
After the NMI merger
USAePay kept the product name. The public front door moved. That is why “usaepay login” still prints the old brand in the query and NMI in the sitelinks.
Bookmarks from 2019–2022 often resolve to a host that no longer takes production traffic. The username on that bookmark can still be valid on the new host. Changing the password on a dead host does nothing.
NMI publishes a current list of consoles at nmi.com/logins. If your ISO branded a vanity path, that path is in the welcome PDF, not in a search ad.