Captive portal Causing issue with ping command

I have my office Laptop, We are connecting the laptop to local wifi router . This router is isolated from office internet. we have other ethernet device on same router.
When the laptop is connected to Router we get the message of Captive Device Detection.

  1. We are ping(ing) from device to laptop (local ip), ping works successfully.
  2. Suddenly the ping stops to respond for some time .

On other zscaler forum pages I read that there is timeout for captive network.

  1. Does after timeout the zscaler disconnects Laptop network completely from router/
  2. What is the default timeout if any ?
  3. How can I increase the timeout for laptop ?

When the laptop stops to respond to ping at that time again I get the message of captive network detection.