Can't delete user in High Sierra
Hi, I recently got a mac, and created an admin account (1) to use migrant assistant to restore a user (2) from my Time Machine backup. Now I've made my migrated account (2) the admin account and made the original account (1) a standard user. I keep trying to delete user 1 but the minus button is greyed out. I've also tried using Directory Utility, but every time I press the '-' button and 'Delete' nothing happens at all. I've tried logging out of the user I want to delete, changing the password, but nothing seems to work. Also, whenever I open my Mac, it automatically goes to the login window of user (1) and asks me to input my password, and I can't switch to user (2) (which is the admin) unless I log into user (1). Any help would be appreciated.
MacBook Pro TouchBar and Touch ID, macOS High Sierra (10.13.2)