Think i got it … issue between chait and screen (me ).
I didn’t add static in my DNS …
$ ping static.example.net
ping: static.example.net: Name or service not known
But : i think certbot throw error , not here. and looking at log : don’t found a dns request to static.shnoulle.net
I add it in DNS and come back tomorrow (i already test 5 times 
)
PS/Edit : after tracking log: staic are never tested …
Seems related to Expands not working on pre-existing cert requests maybe