Both HOLIDAY2023 and PRIMEHOLIDAY2023 return the warning, "This coupon does not apply to any products in your order". The original notification doesn't say anything about specific products, only the order has to be over $50, which it already is in my cart. All products in my cart are eligible for coupons.

I'm having the same problem so it must be a store-side issue.

Yes. They are not working

I put products for $50 in my cart yesterday, but wanted to wait with my order in case I found something else I wanted. Today all of the products had been changed to "Coupons do not apply". That really gives a sour taste. Useless with these coupons if all vendors just removes their products from being able to use them.

Both are not working!

Not an isolated case it seems.

I just tried both coupons and they are working as long as the order is a minimum of $50 with products that allow coupons and are not on sale.  Note that the coupon has the indication "Excludes Sale Items".  If you are still experiencing problems please contact me via sitemail with the particulars of your order. Thank you.

Where in this does it say "Excludes Sale Items"? 

"Enjoy a merry 25% OFF your order of $50 or more! Just enter our limited-time coupon code: Holiday2023 valid until 11:59PM CT on Monday, December 25th, Prime Members sleigh into savings and get 30% OFF your order of $50 or more! Simply apply our limited-time coupon code: PRIMEHOLIDAY2023, valid until 11:509PM CT on Monday, December 25th."

I see that the confusion was caused by the notification not including that information.  I will let the developers know.

Please do so because now I feel cheated. :( I was really looking forward to making an order but not now. 

They fixed it, but they also changed the TOS. The coupon code will not apply to items in sale. I'm starting to double-think if investing in a prime membership was a good idea.

They definitely changed the rules for it between the 22nd and the 23rd. I tried it out the 22nd and it worked fine despite that all items in my cart was on sale. That's me out.