Domain Warning?

Hello all,

Hope everything is well.

Been trying to go to my website and I get this message: “Warning! Domain mapping upgrade for this domain not found. Please log in and go to the Domains Upgrades page of your blog to use this domain.”.

It’s asking me to log in to my WordPress.com account (I used WP.com before getting a WP.org site, but am under the same domain).

I’ve never seen this before. I understand it’s basically telling me to upgrade, but I’m not sure why? I’m just confused.

The website is GPGolfReport.com

Thank you very much for your help in advance.

Kind Regards,

Colin