@JohnnyGoRJ The reason why the devices cannot access each other is that the main wifi network and guest network are isolated from each other in router mode. And the AP isolation cannot be disabled...

@JohnBruso If the VLAN tag need to be enabled to get internet, you can connect the Deco M9 plus to the existing router first to configure it to get internet as dynamic IP. After that, you can enable...

@RyanEverhart789 Please refer to the compatibility list below to get some information. https://www.tp-link.com/Deco-M9-Plus/compatibility/ May it help and have a nice day.

@whiteswan Please try to change the operation mode to access point mode and verify whether it works. Meanwhile,you can try to change another programme to do a P2P downloading. We suspect that it is...

@Hug Hi, some advanced features do not work in access point mode anymore. Please read the statement below to get the difference between the wireless router mode and access point mode....

@zt.F Sorry for the inconvenience caused here, below is the compatibility list of the onemesh, while the Archer A9 is not listed there. https://www.tp-link.com/onemesh/compatibility/ For now, the...