I was having a problem accessing HA using my tailscale link while Nordvpn was active. If I paused Nordvpn the tailscale link work using Microsoft Edge.
I found the solution was to go into my Nordvpn settings, turn on split tunneling, and add the tailscalevpn app by clicking on the Add app button and then browsing to the C:/Program Files/Tailscale directory and double clicking on the tailscale-ipn application.
Hope this helps.