i don’t know if u can see the screen shot…but it says:" Failed:socks connect tcp: dial tcp 127.0.0.1:9050: connectex: No connection could be made because the target machine actively refused it."
i had the same problem and the solution was that I had to install the Tor Browser inside the Umbrel inside the Docker application then I went to check the logs of the Tor Browser what I did I did open Tor Browser and then I open Setting then I clicked in the Advanced Option at the bottom that says “View logs…” then in there I came across of the IP and port that the Tor is using in Umbrel, see below, then I added this ip and port to the Proxy Configuration in the Bitbox APP and then I closed and started again the Bitbox APP. Then I open the Advanced configuration in the Bitbox APP and open the option “Connect to my own Bitcoin Node” then I deleted the Default servers and then I added the address of my Electrum Server that you can see it when you open the Electrum Server in your Umbrel OS in there you have to Ip’s one Local and one Tor so I copied the Tor one that ended with ….onion and added the port that it says also in this configuration in my case was 50003 and then clicked the Button “Check” and then the Bitbox app added my server.