@Krecik_Gdynia Good day, Thank you very much for your patience. Can I have a picture of the error message that "main router doesn't use this function"? Is the firmware on the RE300 v1 is...

@Daniel72 Good day, Sorry for the delay. Both the wireless connection and Ethernet connection would drop the internet right? Would the 2.4ghz and 5ghz lights turn off, or be steady on? May I know the...

@Yar Hi, thank you for the reply. Have you tried to update the beta firmware here: https://community.tp-link.com/en/home/forum/topic/192368?replyId=521758 Thank you very much!

@AmmarOdeh Good day, May I know the model number of your home router? And when you set up the TL-WA855RE as a range extender, would you see the RE and signal lights lit up? If the lights all lit up...

@Raj30 Good day, Thanks a lot for your patience. RE305 v3 does support WPA2-PSK and it would strictly follow the encryption mode of the front router. and it would not have the weak security issue on...

@Ilango Good day, Sorry for the delay. May I know how long have you had the RE450 v3？ And when did this issue start? Have you tried to update the firmware to be the following one: RE450(EU)_V3_190124...