how to create coupons?

I am pretty new to this theme. I am unable to create coupons.

Categories and stores are created, but unable to create new coupons now. I tried to create one from Coupon manager, but it does not give me any option to add coupon code and aff link etc. All I get is to create the title and description. Though I saved it still, but it is not visible to the website.

It shows under respective store that there is one coupon associated to it, but when I click on this, nothing happens.

It shows: We have found 0 items matching your search.

Any video, guide, tutorial please.

Thanks.