@RobertAN Hi, I have the same issue. Using the Deco App on IOS will cause the main router (X50 1.2 connected to the internet) to reboot. 

All are connected via Cat6 ethernet.

Very annoying

  @Orm53 @David-TP I have the same issue. I mentioned this a long time ago already. The app is basically unusable. 
 

Symptoms: 

- when opening app on iOS (newest version) I see that my cliënts are all having the wrong name. This is an old issue that never is resolved; 

- because my clients are all having weird or wrong names, or are displayed offline whereas they are not, I refresh the cliënt list by dragging down to refresh. 
- BAM! app says that decos are offline and crashes. 
- my family is shouting that wifi is disconnected. 
- after a while wifi is back on

- app shows clients as it should. 
- when I close the app, and wait for about an hour and open it again then all the circus is starting all over again. 
 

i have 4 decos X50 v1 (EU) connected as router. I am on 1.6.1. Newest iOS app. 

  @David-TP Hi, I am not installing BETA software as I rely on my network for homeworking and this issue is avoidable.

The reboot (goes from Green to Red to Yellow to Green) is caused by going into the IOS App, looking at the Client list, and refreshing the list. I have to refresh as the CLient list does not show all connected devices correctly.

  @David-TP dear David, 

Thank you for taking the time to react.

I open the Deco app. I see that the device that is the top device of the client list in the app ("iPhone of Jan (ME)"), which is normally displayed and is the device that is managing the Deco app the current time, suddenly has another name ("Samsung Galaxy") and has another IP address than my iPhone. So it displays "Samsung Galaxy (ME)" Also, some other clients are having different names, or ar showing offline. The iOT network (which has 10 devices in it) shows only 2. It is mess, basically.

I decide to refresh the client list, by swiping down, so the list gets refreshed. I try that once, but nothing changes. I wait a bit. Nothing changes. I decide to refresh another time, and BAM! Deco X50 becomes irresponsive. The Deco is showing all nodes as Offline in the app. Clients are all gone. The leds on the deco's are still on an behave normal.

Wifi gets disconnected, and after several minutes, wifi is connected again. When I then refresh the app, all clients and their statusses get "refreshed". And after that moment they show their good and real names and statusses, including the iOT network. For a while that is.., because if I wait a couple of hours the issue is back. 

Your suggestion to install 1.6.4 pre-released firmware, is something that I am not gonna do. Users have done that and it was not good. -> https://community.tp-link.com/en/home/forum/topic/736386 I cannot risk a bricked DECO when I depend on my internet this much. 

Other than that, I cannot and will not be a beta tester for TP-Link when the firmware is constantly this buggy; not only for beta firmware but also for production versions, all are extremeley buggy and not to be trusted unfortunately. 

When I do not open the Deco app, all is working fine. So I have internet. But, I cannot manage my network, cannot see who joined my network and who not, because of the false client list and offline list that is actually online. And because of the crashes in the app and deco. 

I bought the Deco X50 1,5 year ago, and the first firmware release (1.3) was fine. After that, it became a mess. Now I have a router that I cannot manage, for more than a year, causing security risks that I might not know off, I do not dare to install firmware updates at all lately. It is not good. 

By the way: Client Identification ON or OFF does not really make a difference, other than that some devices have now sometimes an entry filled in the field "Operating System" like "iOS". is filled out when a device is an iPhone. But, more than desired, the fields are emty.