GL.iNET AXT1800 Tailscale fail to connect

Hi there - new-ish atx1800 and Tailscale user here. Also trying to use my atx1800 to access my home systems and sometimes use my home location as an exit node over tailscale, similar to @KingRichard and @egates.
Also able to use atx1800 ssh session to ping tailscale IP of home subnet router, but no joy for LAN clients connected to atx1800. Also, I am able to connect to the home subnet router with my laptop (chromebook - running android tailscale client, also my android phone running tailscale client).

ATX1800 vitals: kernal - 4.4.60, OpenWRT - OpenWrt 21.02-SNAPSHOT r16399+165-c67509efd7, tailscale 1.64
Here’s my tailscale settings:

I’d be happy to PM results of network commands above.

Thanks in advance!