Navigate to https://app.wooflash.com/auth/login to get started. Under 'Sign up with your institution', select 'Universiteit Leiden' and press 'Go to login screen'.
Log in using your Microsoft username (username/studentnumber + @vuw.leidenuniv.nl) and password. In the next screen press "Proceed to Wooflash"
Is this your first login?
First login? If so, you will be requested to setup your profile on Wooflash.
Under 'Choose your sector', select 'Higher education'.
Under 'Take advantage of your institution's subscription' it's possible to further specify your profile under 'My specialty'; you don't have to fill this in. Press 'Continue'.
Under 'You are...', select 'A Teacher'.
Finally, your first and last name will be displayed, which you can optionally change. Press 'Continue' to finalize your profile.