ProTools starts up our authorizer as soon as you launch it instead of waiting for you to use the plugin on a track as other DAWs do. If you want a 14-day free trial for our plugins, click "I'm online" and go through the activation process, and the prompt will stop.
But if you click "Quit" on that authorization window, the activation prompt will keep coming up for every installed plugin. So you don't want to try our plugins, I'd recommend uninstalling them before you rerun PT.
To do this on Windows, you can find them in one of these two locations, depending on which version of ProTools you're using:
C:\Program Files\Common Files\Avid\Audio\Plug-Ins
C:\Program Files\Common Files\Digidesign\DAE\Plug-Ins
To do this on Mac, go to the Finder, click on the "Go" menu, then click on "Go to folder..." and enter this file path:
Or enter this file path if you're using an older version of ProTools:/Library/Application Support/Digidesign/Plug-Ins.
Then, look for the plugin names in these folders and throw the files in the trash.