Rename user accounts

Hi!

Could you rename my user accounts here, at translatewiki and at yiwiktionary (where you are bureaucrat), as requested on en.wikipedia? Thanks

You're a global user. Renaming would detach from the global user. Are you sure you want that done?

Yes. I'm trying to get a global account in the new name. (for more detail, see also my request on Meta).

User helder.wiki already exists. Your user cannot be renamed.

It is also mine. It was created by accident when I came here logged in from pt.wikibooks (as explained in the link above to MetaWiki).

PS: The same happened at fr.wv and it could be renamed normally, as said here.

The renaming was done by Emufarmers. Thanks.