Is this module still maintained?

czigor had been looking after the project in recent years, as we only have one small client that's still using it.

I've given you maintainer access and I also posted a review on https://www.drupal.org/project/commerce_datatrans/issues/3428427 📌 Automated Drupal 11 compatibility fixes for commerce_datatrans Needs review , feel free to address that and then commit and release it.

Thank you very much