Hi,

tp-link Archer vr400 AC1200 v.3 (Firmware up-to-date) modem has a wireless problem on both 2.4GHz and 5GHz connections.

Wi-fi clients cannot establish a continuous and stable internet connection on 2.4GHz or 5GHz. The connection is constantly interrupted and we receive the "connected without internet" errors. But when connected to tp-link TL-WA850RE range extender connections are continuous and stable.

On Archer vr400 I tried the change the wi-fi channels, first on auto and then at the recommended numbers, problem presisted.

Archer vr400's wired connections are 4 security cameras's router and a laptop via ethernet.  But this problem started long after the camera system installation.

ISP provider states that there is no problem with our connection, tp-link support states that if there is interference in our connection, this may be the source of the problem.

Could the range extender be affecting the wireless broadcast of the modem?

Thanks in advance.