DEBUG: wp_remote_get to https://api.aelf.org/v1/messes/2022-06-12/france
DEBUG: arguments: Array ( [timeout] => 5 [user-agent] => JCI WordPress-Plugin – free Version )
DEBUG: success getting URL

If you use WordPress without Gutenberg, you can use this Shortcode (copy with Strg+A, paste to TEXT-editor!):

DEBUG: basenode: informations
DEBUG: template:

DEBUG:
LEAVE function checkType // depth: 1 // result: Sainte Trinité
// returnHTMLinsideProc:

DEBUG: result:

Sainte Trinité
api-answer:
Inspect JSON: Copypaste (click in box, Strg-A marks all, then insert into clipboard) the JSON from the following box to https://jsoneditoronline.org):

template:

result:

Plugin-Settings (see Plugin options):
Cache: disabled
oauth Bearer Accesskey:
http-Header default Useragent: 1

the real result:
Sainte Trinité