og:site_name not updated when WordPress Site Name changed

We long ago changed the Site Title on our site https://wheeler-property.com
The new site title is “Wheeler Property Southwest France”
However, the og:site_name being generated by Rank Math has not been updated. It still says:
“Wheeler Maisons et Chateaux”
This is reaching Google search results and must be corrected.
We absolutely need this parameter changed.
Please advise, with a fix or workaround.
Many thanks.