@Farukk I got in touch with support and was able to get my AX55 connected to my AX73. They asked me to try putting the AX73 in satellite mode and connecting it to the AX55 with the AX55 as the main...

I think my question at this point boils down to "is putting a router in EasyMesh satellite mode the same thing as doing a factory reset?" I'm trying to add an AX55 to an AX73 v1.0 as an EasyMesh...