@WightJohn Hi, May I know who is your internet service provider? and what is the model number of your ADSL modem router? Which port on the ISP modem is connected to the Archer VR2800? And could you...

@Sepius Hi, what is your current firmware version? And can I have a picture of the error message? Thank you.

@F1p Hi, could you please double-check the model number and I guess you talked about Archer VR2800, not VR2800V? And can I have a picture of the web UI without interface grouping? Thank you.

@PremekK Hi, no need for switching the mode. Would you mind switching the phone language to English and send me some screenshots? And what are the model number and operating system of your...

@Dave.the.roofer Hi, nice to see you again. Please refer to the reply on this link: https://community.tp-link.com/en/home/forum/topic/264678 Thank you very much.

@Dave.the.roofer Hi, have you tried to update the Deco to the latest firmware: Deco M5(EU)_V3_1.5.3_20210203 And did Deco use the same Wi-Fi SSID as the Kcom technicolour router? I guess the two...