Shortcode Always Displays Default Attribute Value

The quotes in the shortcode call were not standard (despite them looking so). Replacing the old double quote characters with typed-into-notepad, copied, and pasted new quotes in the theme editor resolved the problems.

Thanks to @WebElaine and @vancoder for the help!

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