Thank you @MR.S ! I'm offsite today, but will check those settings and also send you a screenshot tomorrow. Cheers!

@MR.S Not on the network that the printer is on. Should I try checking it? I did (previously) try to create a second network with guest network checked to try to create network people could use...

I have a TP-Link ER605 V2 Wired Gigabit VPN Router with a TP-Link EAP610-Outdoor Omada True WiFi6 AX1800 Gigabit Outdoor Access Point. I'm trying to use a Brother MFC-J5340DW printer on the network....