If you requested a reset password email, there are a couple of reasons it may not have arrived:
Your username is not necessarily your email address. Please double check your invitation email for your Liongard username. If you don't provide a valid username to the forgot password form, an email will not be sent.
The reset email may have been filtered by into your junk mail. Can you check to ensure that your junk mail does not contain an email message from Liongard?