Google Data Studio connection stopped working

Hi @Piotrek ,
I followed the link Looker Studio Overview from your first reply, entered the details to connect and got the following error:

So I’m getting the error with the latest connector.

Could you please check the logs with the connect attempts to understand where it’s failing? as I mentioned before I got the error with the old key, then I added a new key and creds, but I still getting the same error.

Thank you,
Dmitry