I have 3 google nest cameras with floodlights. The network they were connected to went out and all 3 cameras stopped working. When the network came up one of the cameras came back online but the other two switched networks and are now offline with no easy way (that I can see) to get them to switch back to the original network. To make matters worse, so thought maybe it was best to delete and re-install those cameras. So I deleted one of them, but to re-install it wants codes that were on the original box that I threw away a year ago. Help please!