The same problem. Was banned for macro. I used only evernus margin tool on my acount. Also, never used any other programms on any of my account. I asked friends and they also was banned yesterday and also their trade accounts only. And the only reason we can see is margin tool.
Also, you can see this topic on reddit https://www.reddit.com/r/Eve/comments/8qmv82/i_got_banned_for_macro_using/
Guys think that this ban because of new event and speed clicking on gates, but all of them wrote, that they was trading in Jita on their alt when it happened