Congratulations on getting a FIRST promo code! Here's how to apply that to your account.
When signing up for FIRST, you will see a prompt to enter a code, under the payment information details!
Enter your code at the bottom where it says "Your Code". See where it also says "Billed every month starting 9/21/2020, after your 7-day trial period"? Remember that date!
After clicking apply, you'll see that the trial coupon has been applied, and now it says you'll be billed on September 28, 2020 after your coupon trial period! Click submit and you're ready to start being a FIRST member!