Another option:
- Just open lesson on web, hover over three dots (right side of the page, where you have lesson menu)
- Click on “Edit lesson”, in Lesson editor scroll down to “Translation” button, click on it.
- In language dropdown list select language, into which lesson wasn’t translated before and there you can copy all lesson text.
- Translate it with source which you prefer (ChatGPT is also among translation sources on LingQ, just in case)
- Return to “Add Translation” modal again in Lesson editor, select language for which you have available translation, and paste whole text there, save.