Hi Cynthia,
I had the same problem yesterday, exact same as your screen shots. I did everything installing Malwarebytes etc and no software found anything. However trial and error suceeded! Really simple.
Go into your browser settings, I use EDGE, go to >>>>>Cookies and site permissions
Manage and delete cookies and site data
Top of page: Cookies and data stored
(***Manage and delete cookies and site data***)
Next down same page: Site permissions
(**All sites**)
Next down same page: Recent activity
THIS IS WHERE YOU NEED TO BE!
The latest changes made to site permissions
You should see a list of recent sites, and you should open each one in turn and RESET Permissions, at th etop of the page, **** on each and every recent sites since they started popping up, I did them all.
No malware software worked at all for me and the moment I did this they all stopped immediately!
Really hope this helps as i know how frustrating it is.
Rob