Suddenly, my editorial vector images were constantly rejected, although similar materials were always accepted from me. I didn't see any changes in the rules for receiving vector images. What could be the reason?
Sorry, but with so less information, we will have difficulties asking our crystal balls. I do not think, however, that the basic rules have been changed (considerably).
Here is one example of such an image, what is the problem?
...and the reason for the refusal?
Does not comply with the Rules for creating illustrative editorial materials Adobe Stock
Only rule that I see that could apply: Digitally created or manipulated versions of trademarked logos or other brand content — other than social media icons. I do, however, not know how and if Government logos fit into this and if this is a new rule.
Maybe @MatHayward could give us a clue?
These logos were accepted without problems
Around the same time as the other ones or before 9 September 2021 (the date that is shown as update date for the page linked above)?
Yes about the same time
Let's wait if Mat knows what happens.