Apple Time Capsule won't extend wireless network I am running a Wifi network with a fritzbox 7360 and all my apple devices (apple tv old and new, MacbookPro, mac mini, iPhone, iPad) can connect just fine. Recently I bought apple time capsule 3TB which won't join my local wifi for unknown reasons. I ran several resets, checked configuration and read all I could found on the internet. Connectivity and placement seems fine as well (I checked with other devices). 

Below are my settings. Can somebody help?
Joining and extending WiFi networks is only supported with Apple devices. The TC won't join your fritzbox WiFi. You can cable it in however and it'll function as a backup device.