Hello Ana,
We would like to inform you that Yes, our system creates different Invoices for different months but could you please inform us that in what sense you want the different Invoices for different months so we can help you accordingly.
Also, the Credit Note can not be deactivated if there will be any associated with plan but it can be deduct manually before giving the coupon or applying the coupon for the particular plan. For that you need to use the option Deduct Credit under the subscription tab for the particular subscription.
Subscription >> Click on Email of the user >> Click on 3 dots given on right top corner >> Add/Deduct Credit Note
So, you can deduct the credit note from particular subscription before applying the coupon for the same plan but it can not be deactivated.
If you need further support please reach out to us.
Regards,
Vipin Mishra