Amo, you are heavily misinformed and, I must say - in trouble. Two most important notes:
You do need EIN as you need to fill at least form 5472 (About Form 5472, Information Return of a 25% Foreign-Owned U.S. Corporation or a Foreign Corporation Engaged in a U.S. Trade or Business | Internal Revenue Service) every year, and paired form 1120 (About Form 1120, U.S. Corporation Income Tax Return | Internal Revenue Service). Otherwise you are looking into 25k fine per year.
Act quickly, talk with tax advisor...
You do need EIN as you need to fill at least form 5472 (About Form 5472, Information Return of a 25% Foreign-Owned U.S. Corporation or a Foreign Corporation Engaged in a U.S. Trade or Business | Internal Revenue Service) every year, and paired form 1120 (About Form 1120, U.S. Corporation Income Tax Return | Internal Revenue Service). Otherwise you are looking into 25k fine per year.
Act quickly, talk with tax advisor...