Unable to add a custom terminal (Gnome DDTerm extension)

[OADINC]

Hi, I've been trying to change the open here from gnome terminal to ddterm.
This terminal requires you to add its path to PATH so I've done that

I've found the command to open ddterm from a terminal:
com.github.amezin.ddterm --working-directory /Path/To/Target/Folder

But when I set the terminal target to custom,
change the custom command for both local and remote to com.github.amezin.ddterm --working-directory %s,
disable the use default toggle,
run glib-compile-schemas ~/.local/share/glib-2.0/schemas (I did install it for user and not for system),
Reload nautilus or reboot,
It still opens the gnome terminal. I must be missing something. But I can't figure out what. Could you confirm I'm doing it right?

Screen shots showing my current settings in dconf editor:

Edit:
Github page of ddterm

[Stunkymonkey]

sorry i am currently a bit short on time for debugging. Maye it is faster you trying #216

[OADINC]

I understand, I just started at a new job. I'm short on energy.
I tried it, but I was unable to make it work.
Though I must say I'm a novice when it comes to working with git.
So there is a decent chance I did it wrong.
When you get the time to debug it and make it work, I would love to try it again and see it working :)