WordPress Connection Errors

Error 401 Unauthorized

Cause: incorrect username or Application Password.

Fix: create a new Application Password in Users → Profile → Application Passwords. Copy it immediately after creation — it's only shown once.

Error 403 Forbidden

Cause: user doesn't have publishing rights.

Fix: use an account with the Editor or Administrator role.

Error 404 Not Found

Cause: REST API is disabled or the site URL is wrong.

Fix: check that https://yoursite.com/wp-json/wp/v2/posts opens in a browser and returns JSON. Reset permalinks: Settings → Permalinks → Save.

SSL Error

Cause: self-signed SSL certificate.

Fix: install a valid SSL certificate (Let's Encrypt). AI SEO Writer does not support self-signed certificates.

REST API Blocked by a Security Plugin

Cause: plugins like Wordfence, iThemes Security, All-In-One WP Security, or Shield Security can block the REST API or require additional authentication.

Fix:

• Wordfence: Wordfence → Firewall → Manage Firewall → make sure REST API is not blocked. Whitelist the AI SEO Writer server IP.
• iThemes Security: Security → Settings → disable "Restrict REST API" or add an exception for authenticated requests.
• General: temporarily deactivate all security plugins and test the connection. If it works — re-enable them one by one to find the culprit.

Application Passwords Not Available

Cause: Application Passwords are disabled by a plugin or your hosting provider.

Fix: check that the "Application Passwords" section is visible in the WordPress user profile. If it's missing, your host or a security plugin has disabled the feature — contact your host or check security plugin settings.