@Jah Please refer to the Onemesh compatibility list as below: https://www.tp-link.com/onemesh/compatibility/

@Dagster Please verify the firmware version of each Deco units. Open Deco app, click on internet-tab each Deco and get the firmware on the bottom. Besides, please show us a screenshot of the error...

@Michael_DK The agent is right, we can use a standard USB type-C cable to power it up with the original power adapter/charger. If it cannot be powered up with a phone charger and a USB type-C cable,...

@Arnout What is the model number of the extender? With it booted up, what is the led status of it?

@sasasi91 The FAQ attached takes Deco M9 plus as example, while the Deco M4 does not have this feature yet to separate the 2.4GHz and 5GHz. But do not worry about it, this feature will be added in...

@Nidstang The current firmware is 20190311, while it is not the latest one, there is a firmware available to update. It is suggested to disable the firewall or anti-virus software on the main router...