The Add-on Manager will be removed/disabled in Komodo 9.3 AFAIK. The replacement is Package Manager in Commando, it doesn’t support add-ons updating atm, but I sure it will be implemented in the nearest future.
In addition to what Defman said; as of version 9.3 only the Komodo packages repository will be considered. The old community site on activestate.com will be deprecated and you will no longer need to maintain your addon there unless you intend to support older versions.