Hi mehdis6211,
the timer hides the quiz behind a “start quiz” button for good reasons, so I strongly recommend leaving it — especially on your site. It will give your users a better experience.
For example, your own site has intro copy letting users know about the quiz and giving instructions. And then scrolling down, there is a giant image that you have to scroll past. And then below the image there is the quiz. But wait, I can’t select an answer yet because there is a newsletter popup that I have to close first. Now imagine that the quiz timer was running as soon as the page loads.
The Start Quiz button is there to avoid all of the above. If the user wants to read your instructions, they can do so without the pressure of a countdown timer. If they want to subscribe to your newsletter, then they can do so without running out of time to complete the quiz. And so on. Hope this makes sense!
HOWEVER, if you don’t care about any of the above and want the timer to start immediately as soon as your page loads, let me know. I can provide you with code you can add to your theme that will automatically “click” the Start Quiz button as soon as it’s ready.