In case anyone encountered this, I found the solution!
In short, YES, authentication is natively supported as this app uses pymongo. I sourced my solution from the pymongo docs here: http://api.mongodb.com/python/current/examples/authentication.html
In the host field, enter a string of this form:
mongodb://user:password@<hostname or ip>
And pymongo will handle authentication for you. If your password contains special characters, you will need to URL-Escape them. Follow the link to the pymongo docs for more details on that.
Would be nice if the app developer included this in the documentation!
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