WR is finding malware no one else can find and then can't remove it

I am on a new MacBook Air.  Just before my last computer crashed (also a MacBook Air) Webroot kept finding malware and then telling me it couldn't remove it whereupon the program got stuck in an endless loop of scans, finding malware, then being unable to remove it.  I never got around to dealing with the problem before the computer crashed for unrelated reasons.
 
Now it is doing the same thing on my new computer.  I suspected false positives and so I used two other free programs to scan my computer and no other program can find any of this malware that Webroot keeps finding.
 
Please keep in mind that I have whatever the opposite of tech skills would be called along with highly limited patience with same; if fixing this requires lengthy sets of technical instructions I'd rather just pay someone else to fix it or just start using some other program.
 
Thank you.