Modifying Footnote Plugin for Descriptive Title Attributes

I think you just need to replace this:

"Return to footnote '.$id_num.' in the text."

with this:

"Return to footnote '.$identifier.' in the text."

The $id_num is used in the “Display identifiers” loop, but what you want to edit is the “Display footnotes” loop.

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)