Discount shows "discount code isn’t available to you right now"

We have set up a discount code with these parameters:

  • Available on online sales channels

  • $18.00 off 2022 Pre-Order CSA

  • Applies once per order

  • For 2022-SUM-SMALL-WKLY-WED

  • Active from today

When I login to my test account tagged 2022-SUM-SMALL-WKLY-WED and place an order through the online sales channel from the 2022 Pre-Order CSA collection, the code reads: “discount code isn’t available to you right now.”

There are no other active automatic codes that are applied. This code was working until I changed the amount the fixed value off. What am I missing to ensure this code is working?