HA on virtualbox guest + remote access (using tailscale or other)

Has anyone had luck in getting tailscale to work on a HA supervised installation inside a virtualbox debian guest?

I have MX linux host.

I’ve set everything up but I can’t connect to the tailscale IP address from either the host lan or from the android phone app.

A bit stuck and was hoping to avoid installing HA on the host system just because of tailscale.

Alternatively, if another remote access approach is better, could you please advise.