Invalid API key. Please check your API key or reconnect the site and try again.

Hello,

We’re sorry to hear about the issue you’re facing with the Content AI API key. This error usually occurs when the API key is incorrect or has been regenerated after configuring the Content AI module.

To resolve this, please follow these steps:

1. Log in to your Rank Math account and ensure that you are using the correct API key for Content AI.
2. If you’ve confirmed that the API key is correct, head over to your WordPress Dashboard → Rank Math → General Settings → Content AI and refresh the credits. Here’s a screenshot for reference:
   

After refreshing the credits, try using Content AI again, and the issue should be resolved.

If you’re still facing issues after following these steps, please let us know, and we’ll be happy to assist you further.

Hope that helps, and please do not hesitate to let us know if you need my assistance with anything else.

Sources:
How to Fix Failed to Submit Post to the Bing URL Submission API Error » Rank Math
How to Fix 429 Error with IndexNow API » Rank Math
How to Connect/Disconnect Your Website From Content AI

Hello,

We are sorry that you are still experiencing this issue.

To help you resolve this issue, we might need to take a closer look at your website and settings. Please follow these steps:

• Edit the first post on this ticket and include your WordPress and FTP logins in the Sensitive Data section. This is a secure section that only our support staff can access.

• Make sure you take a complete backup of your website before sharing the information with us.
• If you prefer, you can use this plugin to generate a temporary login URL to your website and share that with us instead: https://wordpress.org/plugins/temporary-login-without-password/
• You can also use this plugin to monitor what changes our staff might make on your website (if any): https://wordpress.org/plugins/wp-security-audit-log/

We look forward to helping you.