change my id

And will I be previous id issue owner still ?

In what sense did you delete your account? https://launchpad.net/~eoli3n still appears to exist. Is it possible that you only deleted your account on login.ubuntu.com / login.launchpad.net (which would have been a mistake, and if so we're going to need to do some repair work)?

Also, can you explain why you created two accounts in the first place? For this sort of thing it's generally useful for us to know what you were trying to achieve.

I created two account by mistake, one with my work mail, and one with my personnal one.
I did remove ubuntuone account, because if i "forgot my password", then i receive a mail with a link "password reset request" and then, if i open it, the page is "create account".

What i want :

- completly remove https://launchpad.net/~eoli3n
- change my current ID to ~eoli3n (to keep my issues etc...)
- change my mail to personnal.

If you need to you can send me a mail to my both work and personnal mails, and i will answer to prove you that's me.

OK, from that description the simplest thing for you to do would be to follow the instructions on https://help.launchpad.net/YourAccount/Merging: enter "eoli3n" as the duplicated account name, wait for the verification email, and follow the instructions. Once that's done, you can rename your Launchpad account to "eoli3n" on https://launchpad.net/~/+edit, and make whatever other adjustments you need.