@Larry099,

Definitely a strange behavior... Do you have any of these Deco's behind a networking switch? You may try to bring satellite units offline one by one to see if there is one specific node that is causing the network password to not be applied to the network, especially since you were able to change it with a different combination of nodes.

You might also try disconnecting the satellites, then configuring the WI-Fi network while only the main unit is connected. All of the Management features of the network are handled by this node, and the changes made to this node will affect the other nodes on the network, I am just not positive on the behavior while satellites are disconnected. Then depending on how your satellites are connected and the mood they are in, they may reconnect to the network, otherwise you may need to reset them and add them as satellites for the network again.

You may also try changing the Wi-Fi password with the Web Interface to see if this is a behavior limited to the Deco app. You may also try disconnecting your Phone from your Mobile Carriers network when using the tether app, as this will guarantee a connection between your phone and the network directly, rather than through the cloud.