T-Mobile App (Manage Devices)

BChat wrote:

I can scroll thru my gateway to see the total number of devices I have connected but when I use the T-Mobile Internet App I "always" get "Gateway error code:500".  When I reboot my phone, gateway or reboot both I still get the same error.  I have had T-Mobile for about 3 months and only been able to see the connected devices via the app only once or twice.  Any suggestions?  It would be nice to be able to manage my devices with the app.  I have two phones.  Both are Motorola G (android version 11.0).  Same error on both phones.  My gateway is the FAST 5688W.  HELP!

Known problem with Android and Amazon products.