There are a few reasons why your coupon code for Weight Watchers might not be working. Consider these few things when entering your Weight Watchers promotion code in my Weight Watchers promotional code box: your Weight Watchers coupon code is correct and valid for the particular item to be purchased, and you are redeeming it in the right country. You can find more detailed reasons why your Weight Watchers promo codes may not work in the next block below.