Hi Rob,
Unfortunately, no. The Login protect feature is not meant to be as a "security" block itself, therefore, having a particular way to bypass it, isn't offered.
As per our docs https://docs.imperva.com/bundle/cloud-application-security/page/settings/login-protect.htm - this is a way our customers can have that added 2FA for specific webpages, without having to add it on the application side or installing any additional software.
Don't hesitate to reach out to our support for more info, or details about the service should you have any further inquiries.
------------------------------
Isaac B
Support Engineer
Imperva
------------------------------