I tested it and worked for me. If you would like I can teamviewer and see if I can look into it more to see if I can get it to work.
I am using OBS Classic 0.659b and Deepbot 0.9.8.8.
I made sure windows firewall was not blocking it (Since the windows firewall popped up and asked). Same with an anti-virus.
My Master settings:

OBS Icon is active:

OBS Plugin has the same password.
Made a test command like so:

The source names match exactly as in OBS:
