I use Tailscale to connect remotely to my Umbrel. Start9 probably has something similar. My Alby Hub is hosted in Alby's cloud, which costs 10k sats/month.
Discussion
Start9 doesn't have Tailscale so I have to connect over TOR. I just use Zeus to do what I need since it will do almost everything I need besides reboot the machine.
Alby Cloud is 10k for 3 months then goes to 21k