I have no desktop, just the iPad, which apparently creates a *.AIC extension (as opposed to the desktop version of Illistrator, which is *.AI) which adobe stock does not accept. Is there a way to upload work created entireky on ipad to adobe stock? Thank you for your answer inadvancel.
thank you, so much for your answer - it helped me further. It seems, the problem lies somewhere else: I did as you described, but from my iPad i could not upload the document. I borrowed my neighbour's laptop and with that the file format was recognized. So the problem was not with the extension, but the iPad browser (I checked with Safari and DuckDuckgo).