I use WP GPX Maps 1.7.04 and have seen that Google cookies are set there. There was just a ruling in DE after that is ultimately prohibited – the visitor has no chance to reject the Google cookie.
The ruling also refers to the GDPR and therefore you can assume that this plugin is not really legal EU-wide.
Therefore, please urgently cancel the Google page calls / the setting of Google cookies!
Here the infos to the judgment: https://www.golem.de/news/landgericht-muenchen-einbindung-von-google-fonts-ist-rechtswidrig-2202-162826.html unfortunately in German. It is important to note that not only fonts are affected but generally pages that reload content. “To avoid a possible lawsuit, websites have to host the content like fonts, scripts or images themselves.”