Problem con coupon

i have solved the problem with jquery disabling a seblod system backend plugin named "quick add".
Now i need to create a coupon for single user, that must be used 1 time.
It has a fixed value of 100 €.
When i login with example user, i buy the product.
I insert the coupon code discount is applied.
It's corret.
I return again to shop another product, and i retype code discount, that is applied again.
What is wrong ?
Thank you

Hello,

When creating the coupon code, did you set the Number of uses Total to 1?

After using the coupon code, can you see it in awocoupon->history of uses?

Hello repeat the situation
i have a coupon code for new user account of 100 €.
When the product has price 100 €, the total is zero.
It is here that the problem !
Infact users can use the coupon at the infinity,
I think that is a bug.
I resolve with the total amount of 0,50 cent di eur.
Regards

Hello,

Is this a hikashop store? If so, this may be the solution:
https://awodev.com/forum/awocoupon/help-section/gift-certificate-value-used-remains-0-after-use-correct-amount-not-dedu#comment-4559