filemanager – Accessing Memory Card on Epson WF-7510

When I try to access the memory card in the printer, I am prompted for a password. What password? It seems to accept none that would relate to either the PC or the printer itself and it’s not clear what it wants. Pardon the double-negative but does not accept no password either.

The password popup is pre-populated with my Ubuntu user name and it shows the Domain which is actually the WiFi SSID as I am not using a domain. Neither the user name nor the domain are editable in the popup. I did enable WiFi file sharing on the printer itself and am running Ubuntu 20.10.