This type of VPN isn't hiding your IP address, so when at home it isn't being used. It is only being used when you are away from home and want to VPN back into YOUR network.
I'm having a bit of an issue getting BI to see the zerotier network adapter. I followed all the details in the video, also searched and found a couple of forum threads on it but haven't been able to get is to see it in the web server tab.
I fumbled with it and finally got it to show once and set it, but on the next time I looked, it was back to only showing my physical Ethernet connection. I did however install ZT on my phone and changed the IP address in the BI settings to match what ZT gave me, turned off the port forwarding on the eero router and tried to connect... it worked! the only thing I'm not gonna like is having to remember these IP addresses.
