@RajshekharB 

Hi,  
You can follow the instructions in the thread below for troubleshooting.
What to do if I can't control my Tapo cameras on the Tapo app?
 

If the same phenomenon persists, please confirm the following information.
  1. What's the model number of your router? Do you have internet when connecting to your router's Wi-Fi?
  2. Please send me (@Solla-topee) the camera's MAC address via a private message.
  3. What's the LED status on the camera, such as solid red, flashing red, etc.?
  4. You can enable a hotspot Wi-Fi on your phone, factory reset the camera, configure it with another phone, connect it to the hotspot Wi-Fi, and then check if you can control it remotely.

Best Regards