Hi,
I have been working with licensed images for over decade. I have few other image subscriptions. I got this YayImages deal. I got CopyTrack asking for license information of image that I never downloaded from YayImage, but rather had from other subscription.

YayImages don't have exclusive rights to the images I guess and via CopyTrack they are using sort of phising technique to see if they can catch any Appsumo subscriber and get more money out of them. They do their home work but in choppy way and send those annoying emails to get more info on image you used from some other subscription.