@Jsmartclaps 

Hi，
When the new Wi-Fi name and password are the same as the old Wi-Fi name and password, please reboot the camera, and check if it can connect and have an internet connection.
If it can connected to the Wi-Fi network again, connect your phone to the same Wi-Fi, log in to the Tapo app, remove the camera from the Tapo app, and then check if the LED on the camera will change.
If not, press the reset button on the camera for 10 seconds to factory reset the camera, and pay attention to the LED status on it.

If the LED is flashing green and red, try to reconfigure the camera.
If the LED is flashing red all the time and the camera does not respond to the reset operation, you can try to contact the retailer or local team to check if the camera is under warranty.

Best Regards