I want to just allow one category for this coupon, and encounter 2 problems:

Problem #1. the pop-up message at the checkout page (to check on the discount terms), shows:
C ongratulations, you have redeemed a Discount Coupon.

Coupon Name : VIP Loose Supplies

Coupon Description :
Exclusive discount for existing Customers, Newsletter Subscribers & Facebook Fans only
Category specific: Only valid for loose supplies in this Category.

The coupon is worth 10.00% discount against your order

You need to spend S$35.00 to use this coupon

The coupon is valid between 01/01/2013 and 02/02/2013

Product/Category Restrictions

Category
This coupon is valid for all categories.
Product
This coupon is valid for all products.
Discount Coupons may not be applied towards the purchase of Gift Certificates.
*See the red colored messages, it's a contradiction to the fact that I am only allowing ONE category.

Problem #2:
In that category, there are linked products which I set master category as other categories, and those categories should not be allowed for further discount.

Example in shopping cart:
1. Product A - (allowed category)
2. Product B - (linked product, master category is set to another category other than the allowed category)
Discounted value: Total price of Product A and B.

I tried to include the Top: Deny, and then allow that specific category, but it won't work at all.

The checkout page shows: You must spend at least S$35.00 and/or as per coupon condition to redeem this coupon.
The total qualifies for the minimum, but because I set 'deny' for TOP, even by allowing the specific category won't work.

Appreciate your help.