Wag Amazon Brand Dry Dog Food 50% off “first” S&S order $20.69

Amazon has a 50% off first S&S order clippable coupon for their Wag Dry Dog Food 30lbs (multiple flavors).
I see the coupon on both of my Amazon accounts even though this is not my first order of this item and I took advantage of a 50% off coupon 6 months ago. The coupon also shows up if you’re logged out but YMMV. Others have said when this was available previously that the coupon did not show up for them.
If you can clip the coupon, the price for 30lbs of grain free dog food is $20.69 with 5% S&S or $18.39 with 10% S&S with free shipping.
4 varieties:

• Wag Dry Dog Food Beef & Lentil Recipe With Wild Boar (30 Lb. Bag)
• Wag Dry Dog Food Turkey & Lentil Recipe (30 Lb. Bag)
• Wag Dry Dog Food Salmon & Lentil Recipe (30 Lb. Bag)
• Wag Dry Dog Food Lamb & Lentil Recipe (30 Lb. Bag)