Configure BTCPay to provide HTTPS certificates for additional hosts

I have set up dynamic DNS following steps 1 & 2 of this doc https://docs.btcpayserver.org/Deployment/DynamicDNS/#how-to-use.

I haven’t been able to complete step 3 for the Umbrel BTCPay setup, which requires configuring the BTCPay to provide HTTPS certificates for additional hosts

How do I configure your BTCPay to provide HTTPS certificates for additional hosts?

I’m running Umbel version 0.5.3 and BTCPay Server v1.9.2+6193835ea

PS: Docker commands don’t work when I SSH into my Umbrel terminal.
I usually get an Illegal instruction response from the terminal for every docker command I prompt.

Hi, did you solve this issue? I having the same problem.