Any advertisement that promises weight loss with "no diet - no exercise" is by definition, a scam (something for nothing, too good to be true.) Hey - I just noticed something - there are currently 3 variations of the same disgusting ad on this page as I'm writing this - and they all have conflicting information!
The only way I know to lose weight & keep it off, is to eat healthy, exercise daily & burn more calories than you take in every day. Diet without exercise eventually catches up with you & your metabolism slows down, so the weight stays on.
I didn't start losing weight until I started exercising every day for about an hour (sometimes more, sometimes less.) Before that, I exercised three days a week & was in a holding pattern - stable weight, but way too much of it.
I got to love the endorphins from the exercise so much, that I really hate to skip a day. Plus, it cuts way back on my stimming & makes me less susceptible to stress-related shutdowns.
One thing that's really helped me lately, is keeping track of everything I eat & every workout. My health insurance website has an online food/exercise log that calculates # of calories consumed, minus # of calories burned. I'm sure there are similar calculators to be found online. It's a bit of work - but I like that kind of thing (an AS bonus - enjoying keeping track of statistics.) 
_________________
"I am likely to miss the main event, if I stop to cry & complain again.
So I will keep a deliberate pace - Let the damn breeze dry my face."
- Fiona Apple - "Better Version of Me"