Join Action Fails with Code 403 on ArcBlock Twitter Reward Pool

When attempting to join the ArcBlock 202507 Twitter Reward Pool, the platform returns an error message: "Request failed with code 403" and prevents the user from joining the campaign. Despite meeting the visible requirements (e.g., connecting Twitter and following the required accounts), the system responds with a forbidden access code, indicating a potential permission issue—either from Twitter API authorization, token expiration, or misconfigured backend validation. As a result, users are unable to proceed, marked as "Not Joined", and thus cannot earn points or complete tasks. A clearer explanation or fix is needed to ensure smooth user participation.