FAQ 

My dropdown in the site configuration is empty 

This happens if TYPO3 cached the request from the DeepL API for allowed languages, but no API key was provided. In this case, empty your system cache in TYPO3. Normally no cache files should be created when no API key is provided.

If this step does not work, delete the cached files manually. The location is as follows:

var/cache/data/deepltranslate_core

typo3temp/var/cache/data/deepltranslate_core

After deleting the files in this directory and going to Site Configuration, the extension will reload the cache and the dropdown should have all the translatable language keys.

Fields of a Content Block are not translated 

DeepL translates only fields with l10n_mode set to prefixLangTitle. Content Blocks does not set it, add l10n_mode: prefixLangTitle to the fields in the YAML definition, the fields of a Collection included. See Content Blocks.

What will be the cost for DeepL API subscription? 

You can find all the details regarding the usage of the DeepL API here: