[Plugin: Events Manager] Why my custom attributes don't appear on event page?

Hi,

I created some custom attributes for my event, but they don’t appear on my event page : https://musicfestivals.be/festivals/city-parade/

On EM settings, I add :
#_ATT{Prix d’entrée}
#_ATT{Camping}{Oui|Non}
#_ATT{Line-Up}
#_ATT{Nombre de scènes}{1|2|3|4|5|6|7|8}
#_ATT{Site web}

I complete the different fiels in the admin event page, but on the public event page, nothing is there.

Any idea of what I have to do to resolve that issue?

Thx

https://www.ads-software.com/extend/plugins/events-manager/