12-19-2017 08:28 AM
If you do not know the cameras name and password you will not be able to connect it to the GoPro App. If you can find a computer just follow the steps in this article and you can get that reset: https://gopro.com/help/articles/Block/How-to-Reset-the-Camera-s-Wi-Fi-Name-and-Password
12-19-2017 07:07 PM
I ran into this issue a few weeks ago and the problem was that the serial number registration is meant just for GoPro Plus. If you aren't subscribed or trying to use those cameras with GoPro Plus it won't accept the serial numbers when trying to register them.