Google Failed?

Hi,

I just tried setting up this plugin.

Indexnow went straight through, as did Bing and Yandex, and all of them show up in the log as having been submitted.

Google though is having problems, probably due to its excessive use of trying to stop you doing things.

I’m getting the following error from the log, even though it was set up as per instructions:

Indexing API has not been used in project 121619906011 before or it is disabled. Enable it by visiting https://console.developers.google.com/apis/api/indexing.googleapis.com/overview?project=121619906011 then retry. If you enabled this API recently, wait a few minutes for the action to propagate to our systems and retry.

Any ideas?