I step by step followed the usage instruction for the plugin concerning sunrise.php file and wp-config.php configuration.
My domain franceprotestante.com does ping on my server IP wich is a dedicated server with a dedicated IP. The DNS record is a A record.
If I uncheck the health check is says it is invalid.
If I remove the wp-config lines recommended to remove in case of trouble is says the same.
What did I make wrong ?
Thanks for your help,