Good evening Magnus and welcome to the Events Calendar forum!
Thank you for your interest in our products.
We’ll be glad to answer your questions.
Unfortunately, we do not support QtranslateX for multilingual use of our calendar.
Furthermore, QtranslateX seems to have been abandoned by the plugin developer (not updated in 2 years).
But, the good news is that we do support 2 plugins:
- WPML https://theeventscalendar.com/knowledgebase/wpml-support/
- Polylang Pro (only for the Events Calendar at the time of writing)
I wish I had a better answer for you, but for now it’s the best one I have unfortunately.
Have a great day!
Geoff B.