don't show facebook authors name

in the meantime I solved!

another question: why sometimes I see the author’s name with the link to facebook page, while in other cases the name is gray?
thank you

1) When user has entered his profile link it appears with Author’s name linked to facebook page. THis options is individual posts where for each posts author may be different
2) For hompage or archives pages user see gray name.

You have choice to which would apear

Hello marga and Nazakat, how would I be able to have multiples authors show on Facebook. After searching on codex I have found the function wp list authors. Will this show both authors on Facebook?

Thanks

You can show only one author on facebook at a time .