mermaid-diagrams

I'm using ok this extension on google docs, I only have a problem with the invisible lines sintax (B~~~ Bcm2). I guess there is a problem with the special character ~

It doesn't allow you to modify the sites it can work against, preventing me from using it with the private github server I need to use. Unable to comment on the quality of the plugin, otherwise

I wanted this to work, but it doesnt. There is just a blank space where the chart text was and where the image should be.

It doesn't work outside of github :/