Ok so I set up two factor verification and now needed to set an app specific password for Fantastical 2. Now I have it on two computers and it prompted me to make a password for each. So I generated one for each and both work fine. Now I'm still confused with this. Do I need to save those passwords or write them down? Will I need them again? This whole two-step/two factor thing is so confusing and their literature on it doesn't exactly explain it well.