Unable to link OT network discovery to Lansweeper on-premise

[pbrenkus-sbl]

Hi, I have fresh clean testing installation of Lansweeper on-prem 12.6.1.32 and Network Discovery 4.9.4 (IT and OT). Both services are running on the same Windows Server 2022. I am unable to link Network Discovery service to Lansweeper on-prem service. Followed known KB article Link Network Discovery Hub with Lansweeper On-premises but not helpful with the error.
When I enter linking URL to Network Discovery, I immediately get this error:
Something went wrong while connecting with your Lansweeper On-premises installation.
No notification about new link appears in Lansweeper on-prem console.
Is there anything I missed?

Thank

[DavidPK]

Hi,

Are you currently connected to a Lansweeper Site?

Before linking your Network Discovery Hub, please ensure that your Lansweeper on‑prem installation is not connected to a Lansweeper Site. Network Discovery Hub should only be linked to Lansweeper on‑prem if you do not plan to establish a connection between your on‑prem installation and a Lansweeper Site.

[pbrenkus-sbl]

Hi, no, it is not linked. It is fresh new installation, it wasn't connected.

Any other idea please?

Thanks