@Goblino Try resetting the router (hold the reset button for about 10 seconds). If ther's no improvement and the device is under warranty contact your retailer or your local support.

@alexkn Follow this troubleshooting guide on what you should do if you can't access the internet.

@Stuart_R You can connect RE330 as a second range extender to your main router to further extend its wireless coverage if you want.

@Paul99 If your idea is to have the same wireless SSID on your range extender like on your broadband hub you can use for example RE315: Copy host SSID button will make the SSID of teh extended...

@cpkd94 This is an ISP provided device and I don't believe it has a wireless range extender features. Usually the Operation Mode menu is under Advanced or under Advanced=>System Tools menu. Although...

@JardaRK Without an administrator password you can't access the router's configuration backup feature. That's the only way to backup your existing router configuration.