Wi-Fi System Error - Mws::Controller::Manager: the controller DPN document is not accepted.

[cffmnk]

I'm trying to connect KN-1111 as Extender to my KN-3811 using Wi-Fi System. KN-1111 shown in "Extenders available for adding to the Wi-Fi System" but on "Acquire" nothing happens.

Error from KN-3811 system log
Mws::Controller::Manager: the controller DPN document is not accepted. 

I've tried to reset both devices, tried different os versions, reinstalled wifi system component,  tried both ethernet and wps connection methods. No success.

[Aleksei Kotenko]

Same for me

[Aleksei Kotenko]

ok, lemme give a bit more context: I have two routers, one bought in Germany and another one is from the CIS. From the CIS one doesn't allow to build mesh anymore, so I switched EU one as the main router and the CIS one as a repeater; the setup now works.

P.S. The first setup worked on Feb 25 once I set it up, but after backup restore (yep, I did some shit and had to restore my routers), the mesh was not restored and had to be configured from scratch. The chatgpt says the DPD document and Mws::Controller::Manager are the components of Keenetic Cloud, so I may assume because of keenetic splitting into two companies (google netcraze), the old CIS-based devices now have issues.