Hi, 

I have had nothing but problems with the Decco mesh router since I purchased it last fall (2-pack).

The Decco is connected via Ethernet directly to the FIOS box from Frontier. 

TP-link has already replaced one of the units after troubleshooting, but the problems persist.

Here is my issue:

1. Whenever I make a change to the Decco settings and the Decco reboots it can no longer connect to the internet. The LED turns red and I have no internet. I have tried
   • to reboot the router and FIOS box in different orders, for different times
   • Cloned the MAC address from the Decco router (since it is the one registered with the service provider) to my desktop, I can access the internet
   • Cloned the MAC address from the Decco router to my old Archer C9 routher, I can access the internet
   • factory reset the Decco, still the same problem
2. Today it was evern stranger: 
   • I tried to change the IoT network from 2.4GHz to 2.4 and 5 GHz
   • Tapped save in the app, a spinning cicle is show, decco reboots
   • Red LED. HOWEVER I can still connect to the interent on the 2.4GHz IoT network from my desktop computer
   • None of the other networks have an internt connection
   • The app still shows IoT network as 2.4GHz only
   • Tried changing the IoT network again to have 2.4GHz and 5GHz, this time the app does not freeze, but shows IoT as both 2.4 and 5 GHz
   • disconected and reconnected wifi on my desktop, ran speedtest, now 5GHz but speedtest only shows a download speed, then stops
   • Rebotted Decco network again
   • LED still red, but IoT network shows both upload and download speeds consitent with 5GHz, and connected to 5GHz
   • none of the other networks (standard and guest) have interent connection when conneted to
   • Rebooted FIOS access point
   • connected the Decco to old Archer C9, still red LED, even after rebooting
   • Howver, normal network has internet connection when connected
   • gest network no internet
   • IoT network no internet
   • Rebooted Decco again, this time the green light comes on briefly, then turns yellow and green a few times, then red
   • Reset Decco to factory settings, set it up again, no internet connection
   • Connected the old Archer C9 router, no problem Internet OK
   • Connected Decco via Archer C9, no internet

I am about to give up on these devices, simply too much troble to get them working, unless anybody has any smart ideas of what the problem could be.

Thanks, 

Andreas