Akismet Error #10404

API Access Restricted

Why am I receiving this error?

We have detected that this API key has been used on multiple sites. Typically this is fine with us, however we would like to confirm that the person using the API key has access to the Akismet account the key belongs to.

What should I do?

Use an API key that you control or add the new site to an Akismet active subscription.