Hi Amira -
Confirming with development on your question, but I believe the nulls can be used an unlimited time and the ones that were set to 0 were causing the issue.
We also have the reports fixed on our local environment and error messages updated.
1. Both reports are fixed
2. The following error messages are being displayed:
- inactive - promo code no longer active ------- "Sorry, promotion code 'BOSTON20' is no longer active."
- times applicable - promo code has been used up ---- "Sorry, promotion code 'BOSTON20' has been used up."
- min purchase require not met ----- "Sorry, promotion code 'BOSTON20' requires a minimum purchase of $39.99."
- max purchase requirement not met ----- "Sorry, promotion code 'BC30' is not valid on purchases over $500.00.
Let em know if you want any of the messages updated.