N300 EX2700 worked for a while now I cannot connect via wifi or wired

[Ellis01]

My extender has been working for at least 6 months but suddenly it disconnected all the devices that were connected to it. Ive tried resetting my router and the extender connects to the router but my phone fails to connect to it, stating that IP address could not be obtained. Can you please advise

[plemans · Accepted solution]

What router are you using? The router actually assigns the IP address as its the dhcp server and not the extender. 

When you say you tried resetting your router, many think resetting is just rebooting it. Did you reboot it or did you factory reset it?

What firmware is on the extender?

Again, router and firmware version?

Modem you're using?

Is it only wireless devices having issues or if you hardwire into the extender, does it work?

How far away from the router is it?

have you tried changing wifi channels in case there's interference?

What is your house materials?

[plemans · Accepted solution]

What router are you using? The router actually assigns the IP address as its the dhcp server and not the extender. 

When you say you tried resetting your router, many think resetting is just rebooting it. Did you reboot it or did you factory reset it?

What firmware is on the extender?

Again, router and firmware version?

Modem you're using?

Is it only wireless devices having issues or if you hardwire into the extender, does it work?

How far away from the router is it?

have you tried changing wifi channels in case there's interference?

What is your house materials?