I turned off access to guest - both in the category and the forum. I cleared all caches.
Then, as guest, I browsed the forum - it told me correctly: "no access".
But then, I clicked on "recent topic" listed below the forum, and it brought up the topic. I expected it to tell me: no access. Looks like a bug.
url: https://dvalliance.com/community/tech-discussions/ (for correct blocked response)
The post inside should be blocked, but is not properly blocked. Can you fix this please?
Please let me know how have you turned off access for guest?
Also, have you deleted wpForo cache in Dashboard > Forums > Dashboard admin page?