Ariel Detergent No Longer Removes Stains

I’ve been using Ariel laundry detergent for about 20 years, and it used to work perfectly. However, lately, it doesn’t remove stains at all, even when I use both the detergent and the stain remover together. The quality just isn’t the same as it used to be. I’ve heard rumors that fake Ariel products are being sold everywhere, and now I’m starting to wonder if the ones I bought are counterfeit. Can you please reassure me about the authenticity of the product I purchased? How can I tell if it’s fake? I’m really disappointed in how such a great product has changed. If this continues, I’ll be switching to another brand.