Translation not working

Just released a quick update to fix this issue.

thanks it works and I made a Slovak translation, I can send it?

Great. Please use the GitHub repo to contribute to the plugin and please follow the contribution guidelines.

Thank you.

Why when the languages in MailPoet WooCommerce Add-on Transifex project. translated from the plugin but it does not work and I had to translate and upload manually after .mo files?

The translations of the plugin need to be updated. All current translations on the Transifex project is out of date.