Tailscale connection problem

I have set up Tailscale on my desktop, old laptop, and phone, I can ping each device and it works.
But I cannot connect to any of the other devices other than the ping.

Does anybody know how I can get it to connect (ssh/tailscaleIP) between the devices so I can use Tailscale to access my other machines when/if I need it when I’m away for work?

Both desktop and laptop are running the latest versions of Manjaro KDE Plasma and the phone is running the latest version of Android 11.

Tailscale says they cannot help since they do not use Manjaro or Arch Linux and said to ask here.