Select Subway Restaurants: Buy One Footlong Sub, Get One Footlong Sub Free

The last BOGO promo code expired 2 days ago.
Now, it’s back to BOGOFTL. ‘Free Footlong when you buy ANY Footlong’
I got it to work on their new Subway Series sandwiches; it took off -$11.79
FL599 also works if you just want one footlong.
https://www.subway.com/