the app displayed error code 256

[Willeye]

I just purchased 4 arlo essential cameras. installed them, everything worked fine for about a week, then all of a sudden, 2 of the stopped working and went offline. the  other 2 work fine (for now)  tried reconnecting, checking my router, factory reset, etc. the app displayed error code 256. support for these products is absolutely atrocious.  does anyone have a fix? 

[JamesC]

Willeye,

At what point during onboarding are you seeing the error message? Try fully charging the cameras and then follow the factory reset instructions here: https://kb.arlo.com/000063225/How-do-I-factory-reset-my-Arlo-Essential-Outdoor-Camera-2nd-Generation

After the reset is complete, attempt to onboard again to see if you still experience the same behavior.

JamesC