I have read through the http://www.adobe.com/content/dam/acom/en/legal/servicetou/Adobe_Stock_Terms-en_US_20160616 .pdf
Last time I asked a question this was the reply I got:
"You need to reduce the size of the file to 1000 pixels on the long side (or smaller) and you must add the copyright information directly onto the image itself in visible location at a legible font size. Copyright info is "© Artist Name - stock.adobe.com"
Having read through the terms, I cannot see anywhere the 1000 pixel rule. Also, why would such a rule exist? It completely jeopardizes the quality of the image. The intended use is for social media marketing of my business.