To recover your password or fix connectivity issues just perform this quick reset. Please note that it is a very time sensitive process.
You need to make sure you are on the latest version of the Pearl RearVision App (and cannot be on a beta version). The App Version should be 1.5 or later. You should then unplug the OBD adapter and wait exactly two minutes. Next, plug the adapter back and wait exactly 3 minutes. At this point open the Pearl App (version 1.5 or later) and begin setup. The OBD adapter will automatically share its Wi-Fi password with the app.
Please, you should also make sure you write down this password in case you ever need it in the future.
Tip: When charging your RearVision through the USB port make sure that it is not plugged in upside down