I have received lots of emails from CC inviting me to change EA to ED, but I have ED conflict. So, I don’t know if I can ED2. Thanks
If you have an ED already, you can’t. What you can do, if you want to, is find out when your other school’s ED date is, and if it is well before CoCo’s ED2 date. That way, if you get bad news from the other school, you could consider calling admissions then, and only then, about switching to ED2.