To play devil’s advocate, tab completion would have also likely caught this. OP could have typed /mnt/t<Tab> and it would autofill temp, or <Tab><Tab> would show the matching options if it’s ambiguous.

I haven’t used it personally, I think Tailscale would help here. It sounds like it doesn’t require port forwarding, and uses Wireguard under the covers.

I’ve never heard of YumoHost, but I don’t get why preventing upgrades to an application deemed to have “issues” makes sense. If it has issues, wouldn’t you want to upgrade it when the issues are fixed?