@Bobas Can you please confirm your deco's hardware version you can find this info on the bottom of your deco and your current firmware version which can be find in the deco app by clicking one More >...

@Pessimism4567 The firmware that supports this may option may not be out for your deco yet. If your model supports it you would see it on the Device Info section in the app. Example of it working on...

@albgen May I please have the hardware version of your deco (found on the bottom of your deco) and the firmware version (found in the deco app) Also you will find some troubleshooting steps below. If...

@shkhoo Here is a link to the web ui. FYI it's very limited. http://tplinkdeco.net Also Please see the following post from a member of the tp-link staff about the web ui...

@gaz7 Was thinking about your problem more and wanted to see something. If you can go into the deco app and from the network tab look at the top left for three lines click them and then look for...

@gaz7 What about turning on the guest network and connecting the printer to the WiFi that way?