How to reactivate a user account.

1. Log in to the account as a site administrator.

2. Go to the users section.

User-tab

3. Click the user you want to reactivate.

New-user-tab

4. Click the Authentication tab on the right.

Authentication-Tab

5. Click the toggle on for "User is active" in the User Status section.

User-status

6. Click the Save text.