TP-Link wrote @S1687 For MR6400 V4(the same as MR600 v1 or other models in beta firmware), the beta firmware provided the option to manually select the 3G/4G bands which the modem supported...

@SuperFocus @SteveF2 Hi, your conversation has provided a lot of useful information and I am sure both new users and I have learned a lot. As for “why the MR600 DDNS client is not reporting the IP...

@GuiPoM Hi, Thank you very much for your patience. Here is some background information: Under access point mode, all the clients under guest network are only allowed to access the gateway and it is...

@Clarkii Hi, Thank you very much for your time and patience. May I know who is your internet service provider? And what is the model number of your ISP router? Did you set up Deco under access point...

@Erik_ Hi, welcome to the community. Could you please refer to this link to get some troubleshooting suggestions: Deco LAN speed is capped to 100m/s

Occasionally we received some feedback about the slow LAN speed from Deco and the typical description would be: "my internet bandwidth is over 200/500m/s, but I only got about 100m/s from Deco"....