Good afternoon Marc and welcome to the Events Calendar Support forum!
Thank you for reaching out to us.
We are sorry to hear about the hreflang tags missing from your install.
I would love to help you with this topic.
The first thing I am noticing is that you are not fully up to date on our plugins.
After a quick database backup, I would recommend updating to the latest version.
Secondly, we are about to release several enhancements for WPML integration, so stay tuned!
As for troubleshooting your specific issue, I have a couple of follow-up questions:
- Can you confirm if you used the following instructions: https://theeventscalendar.com/knowledgebase/setting-up-the-events-calendar-with-wpml/
- Can you confirm if you are indeed using different domains to handle the different languages ?
Best regards,
Geoff B.