You can skip initial whitelisting if you have other identical machine, by importing the whitelist from the other machine.
The detail steps can be found at: I have multiple machines and how do I clone my whitelist on the other machines? – SecureAPlus Support Pages
You can also use this method if you want to uninstall and reinstall SecureAPlus, but do not want to perform initial whitelist again. Before uninstallation, export the whitelist. Make sure that you cut off the internet connection, so that there will be no background application updating certain software (it will get blocked if you reinstall, because it is not in your exported whitelist).