The smartCamp module will have a red reset button on it. You'd need to press and hold the red button for 10-15 seconds. Within a minute or so you should see the SmartCamp Wi-Fi network show up again with the password reset to the default "12345678".

In the Cirrus 620 it is behind one of the white access panels in the dinette area:

In the Cirrus 820 it is located under the step-up area behind the WFCO converter: