Once I set up the range extender I had no issue connecting to the extended WiFi on both my phone and another one. A couple hours later on a third phone it just wouldn't connect, getting stuck on the "obtaining IP address". It disconnected from my phone because I left the house and when I tried to reconnect it did the same thing. Even after restarting my phone twice I ended up having to "forget" the original WiFi as well so my phone wouldn't try to connect to the other router. It always result in "IP configuration failure" or something of the sort I can't quite remember well.

This was yesterday, and today it's happening again. I know it is not my phone because as I said it is happening on other devices. Any clue to why this could be happening? It also is really annoying since it won't let me access the settings of the range extender because of the lack of connection.

Thanks in advance