Hello, everyone!
I would like to share how I solved this issue when adding an extender to a Wi-Fi system. I have Keenetic Hopper (Main Router) running OS 4.3.6.3 and a new Keenetic Buddy 6. The Problem: The "Acquire" button did nothing in the Web UI, and the system log showed the error: "The controller DPN document is not accepted".
Here is the step-by-step solution that worked for me:
Log in to your main router's web interface (192.168.1.1). Go to Management -> Users and Access. Ensure that your 'admin' user has SSH and Telnet permissions enabled (Telnet uses port 23 by default).
Open your terminal (I used Linux, but PowerShell/CMD works too) and connect to the router: "telnet 192.168.1.1" Enter your admin credentials to log in.
Manual Acquisition. Type the command "mws acquire " (with a space) and press Tab. The CLI should automatically show the MAC address of your Buddy/extender. Complete and run the command: "mws acquire <YOUR_MAC_ADDRESS> eula-accept no-update"
Wait and Save. After a short moment, the Buddy appeared as "Acquired" in the Web UI. To make sure the settings persist, run this command in the telnet session: "system configuration save"
Update Firmware. Once the node was active, I went to the "Wi-Fi System" tab in the Web UI and triggered an OS update for the nodes. After about 5 minutes, everything was fully synced and running the latest version.
Access Extender. I can now access the Buddy's local web interface directly by clicking its IP address link in the main router's Wi-Fi System list.
I hope this helps anyone struggling with the same DPN document error!