It has moderation turned on since several weeks now.
It is not related to Pro1 launch or delay but initiated by spams.

Several spam messages appeared on the forum which were deleted by next day but started to appear again.

This is the reason of moderation which is temporary while the root of the problem is not resolved.
However, it makes the forum being far from interactive.

Moderator is also tired in constantly looking through threads and approving messages, but he said spam messages are still arriving.

Naturally, they have more important problems around Pro1 launch now but they should have to find a solution soon...