Go to https://online.businessanalyze.com 

If you`ve never logged in with Business Analyze ID you need to click «Set new password»

Enter the e-mail you are registered in Business Analyze with. (aliases will not work)

You will recieve an email with a «Reset password link», click it and set your password.
NB! Make sure to check your spam folder.

When you log in for the first time, you’ll be asked to enter your phone number. If you’d prefer to keep receiving your 2FA codes by email, simply ignore this prompt.