i you have followed this guide and no gohttp://www.tp-link.com/en/article/?id=318 then post all the steps you ate doing to help you ypu posted All changes and if I make again are presented networks...

How to Configure my TP- LINK Range Extender on MAC(For TL-WA830RE) http://www.tp-link.com/en/article/?faqid=408 How to configure my TP- LINK Range Extender on MAC ?...

enable Ping Watch dog and save, under System Tools. read similar threads and wait for a new firmware. http://forum.tp-link.com/showthread.php?2542-WA830RE-connection-to-router-drops-out&region=china...

quaresma07 it would be nice if you elaborated your threads by posting info. some of the devices have issues with security sometimes WEP others WPA you have not posted what security you are extending,...

Kane explain how to upgrade firmware TL-WA830RE Ver.1 & Ver.2 only have first firmware/factory firmware quaresma07 its only able to reload firmware

if possible connect RE to dhcp server