Hello,
For your coupon "KORTING" (your template), you want to set the "quota" so it can be use only once.
If you just want the customer to be able to use it, in the generator, you can use the setting "Discount Customer Assign" (even if the translation is not up to date, I'll look into that).
For the rest, it looks good.
Do you have issues ?
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.