There are lots of visitor recording services: Hotjar, mouseflow, lucky orange, Inspectlet, etc. But they do not record user interaction with canvas. The only thing you may see is a black screen.
According to Lucky orange documents It is possible to work with canvas element by calling LO.update_canvas("canvas") method.
I am not the programmer, what should I do to make it work?
As far as I understand I should call a js function, for example on mouse click.