Pete, this is the second thread where you mention trying to contact Cool Tech and are not getting a response. I think there may be a problem on your side of email??? You can easily get Cool Tech technical support at firstname.lastname@example.org
That contact info and also a form is on Cool Tech's website under the "Contact" link. https://www.cooltechllc.com/contact-us
For your benefit, a pdf copy of the instructions is attached.
But additionally, I think I know what is causing your problem and I will explain in next post.