Image in downloads but not licensed?

I have a full size image from Adobe Stock which is in my downloads (since 2018), however it doesn't also appear in my licensed images. I need to find proof of purchase but since this was so long ago, I don't remember doing this.. how could it be possible to have downloaded the image without obtaining a license for it? Is there some loophole that made this possible or could there have been a license which has since expired? Any help would be much appreciated, thanks!