A quick look online gives you that the Eero routers by default are on the 192.168.0.0/24 range [1], which is not inside of the 192.168.1.0/24
Have you changed the IP of your router to be 192.168.1.1 (or similar) [1], or can you access the console of your proxmox-server to change the IP through there to be in the range that your router is sending out?