Site blocked as [FakeScan]

I have a SquareSpace site and I had recently updated the Primary Domain name registered for the same site.  (rebranding change on business name/socials, etc.).

After this  AVG has flagged the original address as being 'infected' with URL:Block [FakeScan].  

Why would it block a still registered domain to the same site content as 'infected' ??

 

I've had to add an exception on my local system, but I'm worried about any other people trying to find my site by either name.