Coupon usage show 0/infinity | WordPress.org

Hi i got a really strange problem. Not long ago i created a coupon for a 10% discount with unlimited uses and 1 use per user. That works just fine, but today i tried to create another one with a 20% discount and i’ve used the SAME settings as the previous one but instead of a status of 1/infinity i get 0/infinity so i cannot use the coupon.

When i try to apply it , it says that there is no valid email address. The only way to get it to work is to use the allowed emails feature, and use a specific email, but that’s not what i want.

Any suggestions please?