I've got an eero and Synology at home, plus my parents have the same in their home. I've not used nor ever really needed to use find.synology.com, I just connect to the Synology by its internal IP address. Just now, I tried find.synology.com and it reports being unable to find my Synology, as well. But it doesn't matter, I don't think. I'm betting that if you wanted that service to work you'd need to open a port to your Synology for it to be findable from the internet.

So, IMO, just set an IP reservation (as you've done) and connect to that. Also, It shouldn't have to be 192.168.7.X. My reserved IP is 192.168.1.X. So, e.g. I connect to http://192.168.1.20:5000/ to log in to DSM.

Hi. Did you ever get this solved? I have same issue, but I'm coming from a Motorola mb-8611 modem into the eero and then from the eero to a Netgear switch but I've also tried plugging it directly into the eero and it still won't configure router in the Synology NAS DSM

I'd like to know if this got resolved? I have a similar set up with similar issue. When I go into synology settings, it finds my router but then I have to manually add it, but it's not on the list. Is there another name for an eero pro 6? I have port forwarding on for 1194, that's the specific port for OPENVPN. 

Anyone find a solution to this? When I try to use the DSM router setup it says it’s compatible but fails when I try to open the VPN ports. It says make sure UPnP is enabled (which it is). Anyway, I bailed on that and I tried opening the ports manually via Eero app but DSM still says “failed” when testing the VPN ports even though they are open and assigned to the NAS ip via the app. Why isn’t Eero supported yet and how do I get VPN working on my synology NAS. 

1. On your Eero app under "Home" click on your Eero Router (named Gateway Eero 6)

2. Click on "Connected Devices"

3. Scroll through the list to find your "Synology device" - by default it will show up as SynologyNAS

4. Click on it - note the ip address e.g. 192.123.4.56

5. Open a browser and type http://192.123.4.56

6. You should be able to launch the setup

7. In order reserve the above IP and give it a friendly name click on "Settings" at the bottom right in your app

8. Click on Network Settings

9. Click on "Reservations and port forwarding"

10. You should see "SynologyNAS 192.123.4.56" - click on it

11. Change the Nickname to something like mydrive.local

12. Click on Save

You should now be able to access your NAS by simply entering http://mydrive.local in your browser