Copyright complaints are covered by a law called DMCA. This law means that if Adobe receives a complaint they must remove the asset from their web site immediately, without judging the merits of the claim. They must then notify the person who created the asset, to give a chance. The asset must stay offline. https://www.upcounsel.com/dmca-claim (my interpretation only, I am not a lawyer) Adobe go further than the bare requirements of the law by blocking accounts, but their contract with you gives them the right to do this. It's vital to respond quickly and completely to a copyright complaint, since Adobe clearly have a zero tolerance approach. In filing a counter claim, you also need to cover any elements used in making the work (for example, downloaded images, or photos of actual products like toys or cars, accidental logos on clothing, or drawings styled on a recognisable object). Respond once, respond well, and wait. Experience shows Adobe do not like repeated emails and may even block you for that.
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