Where am I supposed to fin my coupon?

[nicbeaulac-0]

Yesterday, I was sent a 30$ coupon because of a misunderstanding with a seller.. Anyways, today I tried to find it on the website but its nowhere. Also tried to search on the internet but all I saw is that it should be im my "Summary" but theres no coupons there. Can someone help me with that?

[rocketscollectibles]

Others could confirm but sellers cannot send 'coupons' to buyers. Sounds like an amicable arrangement where he maybe said he would discount a next purchase to him. I may be wrong but did he told you he'd give you a 'coupon' as personal private message? Would need more info about it but i never heard of coupons other than eBay providing supply to store subscribers