I'm still trying to wrap my head around what this tool is achieving. Running filters on many files? Does this mean that your business dies if the original tool gains the ability (and nice GUI) to run batch jobs on its own?
Do we have aby indication that that's true? They are trying (and apparently succeeded) to sell something that's quite obviously fake. Whatever else they claim should be viewed in the light of that lie.
The assumption was that a trusted third party exists. Since you trust it, by definition, you can contact it to confirm authenticity of the certificate.
But if it's really promising and ready and I care enough then I'll notice anyway.