OK, the events page can be resolved if the URL is formulated
https://trailball.net/fr/events/
That’s good. /en/ works as well.
Now the problem is that none of the French event pages show. The Calendar, List and Widget views are fine. Just no detail page.
Example:
https://trailball.net/fr/?page_id=3081
https://trailball.net/fr/event/?page_id=3081 both resolve correctly to
https://trailball.net/fr/event/trailball-speed-5k-challenge-france-angleterre/
but this page is 404…
Thanks!