Need help sucessfully installing plugin

Hey everyone, so here is my problem. I bought and installed scaler 2, and am attempting to run it, but when I go to the plugins folder it says it’s having an error, I ran the diag test and nothing is showing up in regards to said plugin. I am at a loss as to what to do, as I have no way that I can see to get in touch with the makers of the plugin. If someone could please help me out I would greatly appreciate it.