On the homepage of this module it says this:
July 5th 2022 update no news for the 2.x version has come out for a while, this has mostly been due to incompatibility between the translation system of Yoast.js (the underlying library we use) and Drupal. Yoast has been making it easier working around this but we're unfortunately waiting for a new version of the underlying library after a change in repository structure on Yoast's side.
About 2 weeks ago, the De lead of yoast posted this here:
We have just published an alpha version of yoastseo on NPM! See https://www.npmjs.com/package/yoastseo. Of course, after so long without a release, it is like some things will have broken. We would be very happy to hear your feedback and we most definitely welcome pull requests that would allow an easier integration. We are also rewriting our documentation with respect to that, see https://github.com/Yoast/wordpress-seo/tree/td/yoastseo-readme for the current status.
So maybe its time to have a new release of this module that is based on that new yoast release.
Active
2.0
Code
I'm adding this one as a child issue to the roadmap.
Linking up https://www.drupal.org/project/yoast_seo/issues/2867785 → , yould be great to have this properly translatable.