Failed initial connection mpdroid

I have a PI version 2+ with music box and mopidy installed.
mopidy version 0.19.5
I can reach the musicbox with putty. And via the webbrowser.
Now I want to use mpdroid.
But I get the message
Connection Failed
Connection to MPD-Server failed! Check if the Server is running and reachable. (Failed initial connection).
But somehow at the background of this message I see all my albums.
My mpdroid settings:
Host: The ip address of my music box 192.168.178.23
Port: 6600
Password: musicbox
Streaming host: I do not know what to fill in here
Streaming port:
Streaming URL suffix:
Persistent Notification: not checked

How can I get mpDroid working.

Modifying my /etc/mopidy/mopidy.conf results in different errors.
I changed the [mpd] section.
enabled = true
hostname = 127.0.0.1
port = 6600
password = musicbox
max_connections = 20
connection_timeout = 60
zeroconf = Mopidy MPD server on $hostname
command_blacklist = listall,listallinfo
default_playlist_scheme = m3u

Now I get:
Connection to MPD-Server failed! Check if the Server is running and reachable. (Unable to resolve host “http://192.168.178.23”: No addres associated with hostname)
(I did also change the Host in mpdroid to http://192.168.178.23)
If I undo that change I get:

Connection to MPD-Server failed! Check if the Server is running and reachable. (failed to connect to /192.168.178.23 (port 6600) after 1000ms: isConnected failed: ECONNREFUSED (Connection refused))

You shouldn’t need to make any changes to the mpd settings in /etc/mopidy/mopidy.conf. Changing the hostname to loopback as you’ve done will not allow you to connect from other devices. I’d suggest reverting your config changes, increasing the connection timeout in Mpdroid and also try without an mpd password (I think that mightbe bugged, not sure sorry).

[mpd]
enabled = true
port = 6600
password =
max_connections = 20
connection_timeout = 120
zeroconf = Mopidy MPD server on $hostname
command_blacklist = listall,listallinfo
default_playlist_scheme = m3u

results in:
Connection to MPD-Server vailed! Check if the Server is running and reachable. (null)

On PIMuiscbox the mpd config defaults are as follows:

I followed the advice in updating the mopidy.conf.
However that did not solve the issue.
Finaly I remove the password in the mopidy app. I had entered musicbox as password.
Removing that in combination with the suggested changes in mopidy.conf made it working.