You cannot get into your email, or the password you have used for a year has stopped being accepted. In most cases you can reset it yourself in about two minutes, as long as you have set up a way for Microsoft to check it is really you.
This is the part people are not expecting. Changing your password signs you out of the account on every device, so you will be asked to sign in again on each of them. Work through them in this order and it takes five minutes rather than a week of odd errors:
Devices you forget about are the usual cause of a locked account a day later, because they keep trying the old password in the background.
If the reset page says you are not enabled for password reset, or you no longer have access to the phone or app it wants to use, we will reset it for you. Ring 03 9028 4358 or log a ticket.
We will verify who you are before we do it - usually a quick call back on a number we already hold for you, or a check with your manager or a director. It is the same check that stops somebody else ringing us, claiming to be you, and walking away with access to your mailbox. It takes a minute and we do it every time, for everyone.
Set up two ways of proving who you are, not one: the Microsoft Authenticator app on your phone and a mobile number for text messages. With two methods registered you can always reset your own password, including at 7pm on a Saturday when the office is closed. You can check what you have registered at any time at aka.ms/mfasetup.
Two more habits worth having. Do not reuse your work password anywhere else, particularly not on shopping or social sites - if one of those is breached, your email is next. And store it in a password manager rather than a notebook, so you are not resetting it every few months because you cannot remember it.
Log a ticket at portal.yougrowit.com.au or email support@yougrowit.com.au. If it is stopping you working right now, call 03 9028 4358.
Support hours are Monday to Friday, 8:30am to 5:30pm Melbourne time, excluding Victorian public holidays.