Max speed, yaw rate, rate of gimbal tilt and other parameters are separately adjustable for each of the three flight modes. Have a look at the manual. It sounds like the settings have been tinkered with.
Someone could call and check on them.
No, wait. There's no phone number. There's no street address, either. Not even a state or country. The page content is rife with typos and layout problems, another sign that it's not real.
Here's the...
Just go to the "About" page, About Us
They identify themselves as a DJI reseller. "Owned and operated by EARTH THRIVING LIMITED". That is the same name of a Scottish company that was dissolved to years ago. (source).
Their use of the DJI name...