We have a new VNA 21.2.6 installation that we have just set up which works fine. The integration with Dx Performance Management was simple and we were able to select the data collector that it relates to with no issue.
However, when integrating with DX Spectrum, in the Spectrum OneClick web page -> Administration -> VNA Configuration screen, we cannot choose a specific SpectroServer to be selected (server selection is greyed out) and it always bind to the MLS server.
The Spectroserver/landscape selection option should be enabled, after clicking on "Save" button and before clicking on "Discover" button.
Once you click on "Discover" button, landscape option will be grayed out and the "Test" button appears in place of "Discover" button.
Please try to disable the integration, and try it again step by step.
If the problem remains, please contact Broadcom Support.