Recognizable property release

Just add a property release, saying that you are the creator of the nice patterns. Sometimes, moderators think that the artwork has been done by someone else (it is your creative work, isn't it) and then they will issue a refusal. It's nothing to be upset. Just do the paperwork.

Hi,

as said Adobe does not know who draw this Art. So if you draw those by yourself it should be no problem to hand in those Releases together with the pictures in a good quality and all will be fine. Hope that helps.

Adobe has no way of knowing who authored the artwork unless you sign and submit a property release, certifying that you are the creator.

It is probably an authorization to publish by the person who made these drawings. But sometimes the decisions are weird. For my part, I don't try to understand, I move on. That's what I advise you unless it's you who made these drawings. So just attach the authorization. The form can be downloaded here https://contributor.stock.adobe.com/static/releases/model/Releases-en.293128c8f1ff86abb874b5f73b8c5094.pdf

Maybe they are just asking for a property release from the artist (who painted or drew the works originally). It's hard to tell anything from thumbnails, there may be details in full resolution.