I have 1 friend whom I monitor his BI system which is installed on Windows 11 home. About half the time BI service loads before Zerotier does its thing thus not allowing us to connect remotely. No problem on a couple other systems or with Tailscale.
Last night I found an article concerning this issue which I have not had a chance to try on their pc but it said to
run SERVICES.MSC from the command prompt, double click on
Blue Iris Service and change Startup type from Automatic to Automatic (delayed)
which will allow a few seconds for Zerotier to fully load before Blueiris.