Adobe Stock images is a complete scam site -- they offer a 30 day trial and will keep charging you after you log on and go through their purposely hard cancellation process.
When you find the charge on your card, and contact them, they bait and switch the conversation: "How can we make you stay?" When you say you cancelled already - they tag on an additional $60 "early cancellation fee."
If they do this to you - use their chat. Demand they cancel without the fee and then reverse any charges. Make sure when you do cancel - that you get a cancellation email. Else, screen shot it.