I will never sign up with Planet Fitness ever again.
The law should be that however you can sign up should be how you can cancel. If you can sign up online or at any gym and use any other gym, then you should be able to cancel online or at any gym.
PF told me I had to go to the PF I joined up at. Doesn’t matter that I moved 70 miles away. The only exception is to send a specific letter in a specific way to that location and then you’ll supposedly get it canceled.
Fuck companies that do that. You make plenty off people forgetting they have a membership. Least you can do is let the smart ones off when they ask politely.