SSL wildcard certificate CONFIGURATION PROBLEMS

Hi
I acquired a new SSL certificate from 1and1 that is for my domain cbesprit.fr and all the subdomains.
The certificate is installed.
I installed Domain Mapping and did what is indicated in this post. https://premium.wpmudev.org/blog/ssl-domain-mapping/
It does not work .
Is there anything else I should do for it to work ... ( .htaccess? wp-config.php?)
you have access if you wish
Thanks