Are there cases where people were hit with Maunzaro but didn't see any effect?

I have gained a lot of weight lately due to a heavy workload and an irregular lifestyle, and I am worried about it. In particular, the fat on my thighs and waist just won't budge, so I became interested in Maunzaro.

Lately, when I hear stories on social media or from people around me, many say they saw great results after getting this. However, I have also heard stories from others who said that even after getting Maunzaro, the effect was not significant. Is it really possible for Maunzaro to have little to no effect?