We set up the forum many years ago:
Back in the day it was very successful, but times change, and it has become less useful.
The old posts were archived a few years ago, and nobody showed any interest in helping move them to a new home, or doing anything proactive with them. So we deleted them.
The current forum is used, but 90% of new posts are spam, and the admin to vet and remove each had far outweighed the benefits.
At the moment the old post have been archived, they will shortly be deleted for ever.
Anyone interested in maintaining the forum (vetting new members, deleting scam posts and garbage) should make themselves known.
Remember that we have many local groups many of which are have active Facebook pages