I've reviewed the script and noticed several issues. It contains outdated syntax and an inefficient code structure. Additionally, it frequently encounters the following error message:

Uncaught SyntaxError: Failed to execute 'evaluate' on 'Document': The string '//a[contains(@href,'adf.ly/') (@href,'u.bb/') or contains(@href,'9.bb/') or contains(@href,'q.gs/') or contains(@href,'j.gs/')]' is not a valid XPath expression.

I believe this project needs a thorough refactoring to address these problems.