I recently received an EERO 6 mesh system with 2 routers covering over 3k sq feet. Excellent signal strength everywhere.
Ring Door Bell and Stick up Camera were successfully installed.
A Chime Pro (gen 1) was not able to connect to the Eero wifi. Reset, searched wifi, selected Eero with password. Claimed that the CP was too far away when it was a foot from the router.
The Floodlight Cam (1 gen) could not connect to the Eeor WiFi, too. I purposely placed 1 router within 10 feet in line of sight of the flood cam, and it still would not connect. It stated along the lines that my router might be too far away. Really?
All of this hardware connected and performed with the previous router.