Hello Mike

Thank you for your answer. I will hopelessly contact OVH for further information about their shared hosting config.

I tried several times, some tries were partially successful. In the end, it worked :
– switched the environment to PHP8, fpm enabled.
– deleted the site (in a multisite configuration) and recreated it.
– enabled enfold+enfold child immediatly, manual demo upload previously enabled in function.php
– manually uploaded demo files with FTP client
– installed the demo.

It may have been a lucky try, but demo has been configured in a couple of seconds.

I keep in mind your option of a local install.

Version de PHP 8.0.12 (Supporte les valeurs 64 bits)
PHP SAPI fpm-fcgi
Valeur maximale des variables PHP 16000
Limite d’exécution PHP 165
Limite de mémoire PHP 512M
Temps d’entrée max -1
Taille maximale de téléversement de fichier 128M
Taille maximale d’envoi de PHP 130M
Version de cURL 7.64.0 OpenSSL/1.1.1n

Best regards
Fabien