Hi. I'm trying to extend my WiFi network using an AirPort Express. The Spark router HG659b has a limited number of device connections and I need the additional device connections the AirPort provides as I connect a lot of devices over WiFi through my home business.

Additionally I've been trying to use a Powerline connection with 2x TP-LINK TL-PA411 adapters to get better speed in my office which does not currently have ethernet.

The problem I have is the WiFi and Powerline networks will work fine for a short period, anything from 10 minutes to ~24 hours then all of a sudden all networks go down; neither the AirPort Express nor the 2x Spark router networks will connect to the internet or to the router. Unplugging the AirPort Express will usually get the Spark router restarted so I suspect it's something to do with that. The problem occurs with and without Powerline however seems to occur quicker while using Powerline. Rebooting the router also seems to work most of the time.

I tried to use the AirPort express purely as a range extender but while it appears to be configured properly it will extend the Spark router network but not connect to the internet.

I've considered extending ethernet to the office but given the issue appears to be with the handoff between the AirPort Express and the Spark router I'm not sure this will improve things as I will still need the AirPort Express in my office.

Any ideas or experience dealing with a similar issue would be greatly appreciated.

Thanks!

Fraser