Can't Get Rid Of Pop Up. ExtendedSprintfld. Very Annoying

I had this annoying popup and called Apple about it. They sent me to a site that let me use the app called Malwarebytes that scanned and quarantined some adware. While installing and running Malwarebytes, I noticed that when the utility asked me for 'full disk access' and gave me a list of app that used it, there was one called "ExtendedSprinfldt". I locked it out and then ran the utility.

When I checked, the reference to ExtendedSpringfld' was gone in my list of apps wanting access.

I then rebooted my laptop and the popup seems now to be gone.

It may reappear but at least that worked once.

Good Luck

cant get this pop up off of my screen. "extendedSprintfld"