I have 2 others questions :
1/ Is there a letsencrypt global dashboard where i can see all certificates generated on all my servers for all my domains ?
2/ Acme.sh create automatically Letsencrypt account without asking me informations unlike cerbot
Isn’t it important to give domain owner informations to Letsencrypt ? And how can i retrieve an “letsencrypt identifier” to join all my certificates on the same account ?
Oh ok, i start to understand. Letsencrypt’s accounts are just temporary accounts associated to a certificate which are deleted on certificate expiration and i’s not important to have all certicates under a same letsencrypt account ?
No, letsencrypt accounts are not temporary and not associated with one certificate only. Accounts are used to keep track of authorizations and their expiration (authorization and certificate are different things), among other things.
You can have several accounts but usually people have one account per machine.