Point 3 ("You do not have the rights to open the interface") appears to be related to reconnecting to your character still alive after being kicked for connection time out or internal error (or any other reason where your character remains in the world for 60s). If you disconnect voluntarily, or reconnect long enough after the character despawns and you're taken to the deployment menu, you will have build access and such.

If the bug occurs and you cannot enter build/armavision/etc, you can respawn and it'll all work again. Similarly, you can also reconnect voluntarily to have your character despawn, and you go to depoyment when reconnected.