It is a promo code that is being offered to those who are affected by Hurricane Fiona so I would say that it wouldn't work for you if you're on the West Coast
Hello from the South Shore! If you sign into your account and go to "plans & add ons" there is a spot there to enter a promo code, once you enter the promo code the data will automatically be added onto your account. Have patience though, the site is...
I also received the promo code, the first time I tried to redeem it - it gave me the same error BUT I tried again and it worked. Don't lose out hope, it'll work! I hope you get power back soon!