Stanley Thermos Leaks Despite Lifetime Warranty Claim

Disappointed with my August purchase, my Stanley 1.06-liter thermos has developed a leak from the hinge side of its lid. Upon buying, I diligently registered the product, relying on the promised lifetime leak-proof guarantee. Despite the lid enduring no impact, it persists in leaking, leaving me perplexed about the warranty procedure. Seeking clarity, I'm frustrated by the lack of information on how to address this issue within the warranty framework. I firmly request a replacement within the terms of the warranty to restore the functionality promised at the time of purchase.