Cant connect to https sites

I have just setup a subnet and im trying to access a router and NAS admin page that require https.
I have enabled the “beta” feature, and set the remote subnets local router…im not getting any love, does it just take a while to work, or and i missing something?

my remote network, where the laptop that has TailScale running as a Subnet router with the command
tailscale up --advertise-routes=
the remote network is to 254

I can access thing on that network from my home by IP, but the admin pages dont load due to https i guess…