You have an ad that is a scam that causes havoc. It may be an email but they have circumvented the ability to mark it as spam.

Mortle Ad Protect Your retirement savings from inflation

If you click on the checkbox or anywhere on the subject line it goes full screen and says Microsoft Defender has detected a virus call a number to resolve. it also disables your mouse. Those not tech savy enough to get out of it will call and fall prey to their scam.