Hello Mike. I'm sorry to hear about the issue you are experiencing on those Macs but I do appreciate the specificity with which you described it. After speaking with my developers they suggested opening a Terminal window and running this:
kextstat | grep -vi apple
See if the Covenant Eyes kext is still loaded. If it’s loaded, then uninstall, reboot, and reinstall Covenant Eyes, which will remove the kext.
The Covenant Eyes kexts are named:
If the issue persists after doing an uninstall, reboot, and reinstall please do let us know. Thank you and have a great rest of your day.