UTM & GCLID catcher

A simple plugin to capture and save UTM tags, FBCLID (Facebook Click Identifier) and the GCLID (Google Click Identifier) in cookies, allowing them to be sent through forms. Also adds WPForms tags for UTM, FBCLID and GCLID. No setting needed.
If you use caching plugins on your site, such as WP Rocket or WP Cache, make sure to add the utm-plugin_ cookie name to the exceptions list.