Cannot connect printer to MR70 router!

I've been trying the WPS feature, both the soft push & the PIN but the printer says it cannot find an access point, but it is maybe 6 feet away from the printer!

Found this after digging around on Brother's site.

I have used the Brother set up utility, temporarily connecting via USB cable & it finds my network immediately & says its connected & to disconnect the USB cable, but the next step, it suddenly cannot find my network! I may try setting up a 2.4 GHz network for it alone, but if all else fails, I guess I could run an Ethernet cable around the outside of the room!

If you experience repeated offline or lost connection issues with your Brother machine, the mesh network’s name (SSID) must be separated into different bands and the Brother machine must be connected to the 2.4 GHz network.

Not all mesh network configurations allow for separating the network name (SSID). Please check with your device manufacturer for specifications and instructions.

EERO Mesh Network Users: We have found a link between EERO routers and Brother devices, which may cause frequent wireless disconnection. Our technical support team has thoroughly researched the situation and found that due to the specifications of EERO routers, we do not have the ability to stabilize their wireless connection with the Brother device. For a better overall network connection, we recommend using your Brother device with an Ethernet cable connected to your router, if supported by your machine's specifications. You may also use a USB cable connected directly to your computer. Brother cannot offer any further assistance with this issue while using an EERO router.