Forums/Categories links do not follow site protocol.
My site uses HTTPS and the links for Forums & Categories in wpForo do not use the same protocol. This means if a user logs into my site (using HTTPS) they won't be logged in when accessing wpForo (using HTTP). Is this a known issue? Does wpForo support HTTPS?
Please make sure your site URLs are set with https:// in Dashboard > Settings > General admin page.
Then go to Dashboard > Forums > Settings > general Tab and click on the [Update Options] button
Then navigate to Dashboard > Forums > Dashboard admin page and click on the [Clear all caches] button.