This is a temporary measure due to a surge in fraud.
The Google security team has announced a temporary ban for developers to publish and update any paid commercial extensions in the official Chrome Web Store.
This was announced by the authoritative resource ZDNet. This step was caused by a sharp increase in fraudulent transactions. According to Google, a full-blown wave of fraudulent transactions began earlier in January.
The restriction on publishing and updating affected all paid extensions, including extensions that require payment before installation, extensions with monthly payments, as well as extensions with paid access to additional features.
For users, existing commercial extensions are still available for download from the official Chrome Web Store, just new versions and new extensions will not appear yet.
The ban measure is temporary. Google is going to develop a long-term solution that would allow to deal with violations of the rules more widely and efficiently.