Is there a way to display multiple authors on a post?

I am unfamiliar with the original. They may also have something similar to the new “Co-Authors Plus”. You would need to review that code for “apply_filters”, “add_actions” or just global functions like those in “Co-Authors Plus”.

Meanwhile, you might investigate migrating to the new version of “Co-Authors Plus”. They offer a template tag, and pretty detailed instructions for how to use it.

Good luck!

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