When you try to login with the wrong details your account will be locked.
You will get a red warning stating:
"account is locked,
please ask a new paswoord"
Your account is locked because of too many incorrect login attempts.
To unlock the account, follow these steps:
Go to "Users" in the management menu.
Find the employee whose account is locked.
Click on that employee’s row.
You will see the message "Employee is locked" at the top of the screen.
Click the "Unlock" button in the orange bar to unlock the account.