This happens on other versions of Mac OS X. I am attempting to try this on an version of Yosemite as well.
It's a licensed product.
Its not happening in a browser. It's happening in the application.
Its not happening on a site its the app.
The reinstall of Mojave isn't relevant. For real. I've seen another user with this same issue. Once the app is installed on a Mac it will not work until you connect it to My Kapersky. Inside the app it WILL NOT connect to a server to authenticate the app. Until this happens the app is useless.
Version is 20.0.0.829.
I have uninstalled and reinstalled the application and the issue continues.