Updating manager server

Hello,
I have an active installation os manager on my ubuntu server.
it seems that you have discontinued server edition of the software.
I am trying to do some things but I am told I need to update the software.

Kindly where are the instructions for updating the server edititon of the software. I believe you mentioned during purchase I will always receive updates.

Self-host a Manager installation
or read Server Edition disappeared - #30 by Mike13