I just tried to acess the web interface by typing in the pi musicbox ip address but I got an connect refuse error. I double checked that the ip address is correct, any ideas? Thanks
Attach a screen and see if there is an error displayed. Or, enable SSH, login and access the log file in /var/log/musicbox_startup.log. Also, once logged in, run service mopidy status.
Have you tried the IP from phone, PC and tablet?
Make sure you’re on the same wifi. I have 2.4 and 5 GHz, but realized that my phone was actually on 4G 