@LukasZach Hi, so can I say that the RE305 works well now? Including 2.4GHz and 5GHz both? What is the model number of the main router and its firmware version? Thanks a lot.

@Wei_Hong0608 Thanks for your valued reply. While could you please re-offer the full screenshots of the settings-status page and the settings-network page? This time, please click the TL-WA855RE icon...

@umar51 Considering the extender is a dual-band extender, you need press the WPS button twice to connect both 2.4GHz and 5GHz. So now you can hold the WPS button again and verify whether the 5GHz...

@no.one Please tell us the model number of your device first. You can find it on the back of the actual device. Besides, what is the led status of this device when it stops working? Can you get...

@Grizwold You can configure the RE450 with the main router's wifi password manually. Below is the setup video you can refer to. https://www.tp-link.com/support/download/re450/#video May it help.

@Samo Thanks for your valued reply. It is glad to hear that you figured it out. FYI, the RE200 is a range extender, usually, it needs to connect to the main router by wireless to boost wifi signal;...