I've noticed that 2 years ago. Very good video. Notice guys when 5 or less minutes to expiry, when you can't place any trades the price suddenly jumps, make it even to real market price. When I started using that against them and started winning money they started blocking all of my trades. Support said everything is fine and they didn't admit to price manipulation.
Other companies works similar some more some less. I now about 4 which seems to don't do that. I have also videos about binary companies, how they work. Everyone new client should be aware of this. People who invest and are not aware of this loose money. That's why about 95% traders loose money.