The rules are not confusing. See my post above with a quote from Harvard’s website which states that first year applicants " “may not apply early (in any form) to U.S. private colleges/universities.”
Unfortunately it appears that the OP does not have strong guidance, but he/she must read directions carefully and follow the same rules as everyone else.
@srcavi01 When you asked Harvard to move your application back to REA did you let them know that you applied ED to Dartmouth and were rejected? Or did you fail to mention that?