OK - I have a very old house with wire mesh and plaster. It’s effectively a giant Faraday cage. This being the case, I set up two separate mesh systems (W33), using different email addresses. Naturally they must be child networks managed by an upstream router. Once I log out of one system, I can no longer log back in, even if I am connected to the proper Wi-Fi system. I get the message “ If you have already installed the mAX router, please connect your mobile device to the local Wi-Fi network.” Error Code 0015-1805. I am not asked for a userID or password. There is nothing to be done. The “Try Again” function just cycles the same message and error. Any advice?