Your email address is the address you provided when you a created your profile. However, if your address is associated with several Fonds de solidarité FTQ accounts, you’ll need to use your PSN to access your account.
Your PSN is your Personal Saver Number. You'll find it listed on some of the documents the Fonds sends you:
Recover my PSN
Do I need to provide my social insurance number?
The Canada Revenue Agency requires that you provide your SIN to anyone who issues a tax slip in your name. Visit the Service Canada site for more information on how to use your social insurance number.