03″ status codes next to the Threads.net URLs.
One quick question: Are your posts on WordPress “Public,” or are you using any membership plugins that might be marking the posts as “Private” or “Hidden” from the REST API?
How to Debug the “Silent Failure”
If you want to see exactly why it’s failing, install a plugin called “WP Activity Log” or check the ActivityPub plugin’s own logging (if enabled in its settings). Look for “Delivery Failed” errors or “401/403” status codes next to