Mavi Rock Rebel Perfume Lost Its Longevity - I Want to Know Why

I have been using your Mavi Rock Rebel perfume for over 8-9 years, and it has almost become my signature scent. However, I recently noticed a significant decline in its longevity with the last 2-3 bottles I purchased. Even those around me have pointed out that the scent is no longer noticeable. Previously, the perfume would last for two days, but now it barely lingers for two hours. I suspect the formula or essence might have changed. I hope you take this issue into consideration, as many loyal customers like myself might stop using it if this continues. I would like to know the reason behind this change.