Use the recovery key you saved when you created your account, or the one-time code your administrator gave you.
Without a recovery key or a code, nobody can open the account again, not even InfoPeak. If your account belongs to a company, ask your administrator for a code.
Choose a new password
You will be signed out everywhere. Mail, calendar and file apps need to be connected again afterwards.
Your password has been changed
Sign in with your new password. If you use two-factor authentication, you will be asked for your code as usual.