Ok Thanks, I try this way immediatly
Ok, I know that if I create a domain directly with "shop.xxxxx.be" it'works.
But I need the "www.xxxxx.be" and for parts of this website I need...
I have create a (main) domain "xxxxx.be"
I need to install an ssl certificate on a subdomain "shop.xxxxx.be" via the interface...
Separate names with a comma.