Hi brought handle for new 5 pro much easier to operate however the QS button only works occasionally,I have to push it 7or8 time for it to switch unit on,a number of people have same problem there if you tube video showing the issue
have contacted DJI waiting for response,any one else have same issue

Hi there. Thank you for your valuable feedback. Osmo Action 5 Pro is waterproof at depths of up to 20 m. To ensure that the product can be used under this depth and pressure, the Quick Switch Button and Shutter/Record Button are made of hard materials to prevent from being activated due to too great a water pressure. At the same time, this design can also prevent power consumption due to accidental pressure of luggage during travel. The buttons therefore may feel somewhat tight/stiff during regular use. We have fed back your issue to the relevant team for evaluation. You can use voice control to trigger the camera to shoot and stop. Thank you for your support. 

Thank you for reply it's not the 5pro
It's the QS switch on the multifunction handle that does not switch unit on sometimes  you have to push the QS button on the handle6/7 times get it to startup some one has a you tube video  explaining  the problem, seems either the button on the handle is faulty  or connection  to 5 pro

fans1f0460f1 Posted at 1-11 04:31
Thank you for reply it's not the 5pro
It's the QS switch on the multifunction handle that does not switch unit on sometimes  you have to push the QS button on the handle6/7 times get it to startup some one has a you tube video  explaining  the problem, seems either the button on the handle is faulty  or connection  to 5 pro

Hi, there
Thanks for your information.
Could you please take a video showing the whole operating process?
You may save it through a shareable link like Google Drive and DropBox, then send the link here.
We will check it further for you.