To fully uninstall PreVeil from Mac, you can use the following steps:
Open Finder.
Click on Applications on the menu on the left.
Scroll down and find the PreVeil application folder, and click on it to expand it.
Open the uninstaller subfolder.
Double click on PreVeil Uninstaller.
When the pop-up box appears, check off the box to Delete my Private Keys, and then click on the Uninstall PreVeil button.
Go back to Finder, select Go from the Mac menu bar, and click on Home from the drop down list.
Delete the PreVeil folder located there.
