Has anybody had issues were camera stops being picked up. works one day then stops? is there any fix for this.

Camera is working and works on other platforms skype etc

Problem sorted using chrome browser

i have my camera connected to my laptop and the laptop has picked up the camera but it isnt showing up when i go to the cam test function 

i am using epocam app on ipad andepocam  driver on pc , can see ipad view on pc in a epocam window  ,but can not pick up cam on cam check , any idea how i set this up .thanks