Is pixsy real or scam?

I previously contacted a image hosting website, and was told that I can legally use the free stock images while building a website, flyer, other, and buy the images once I have decided / settled on design.

This is normal and common. I often get flyers from designers with stock images, and buy the license and they replace the image with the high res version once the license is paid.

pixsy just sent a "letter of demand" for a stock image I had on my website when it was in the initial design...

Is pixsy real or scam? WordPress ...