@VireshNandimath 

Hi,
You can refer to the instructions below to troubleshoot the offline issue.
What to do if I can't control my Tapo cameras on the Tapo app?
 

If the problem remains, please confirm:
1. The LED status on the camera.
2. What's the model number of your router? Do you have internet when connecting to the router's Wi-Fi?
3. Is the camera displayed offline on the Tapo app when your phone connects to the same Wi-Fi as the camera?
4. You can try to reset and reconfigure the camera, then check if it will work.

Best Regards