The DSGVO plugin for WordPress “DSGVO All-in-one” from https://dsgvo-for-wp.com/ is already in the free version a real blast. Many features, great configurator for imprint and privacy and easy to use. But unfortunately, this plug-in clashes with Impreza.
After a long unsuccessful search on the web, I went troubleshooting myself and found that the solution was obvious. Sometimes you should tackle problems directly before wasting time on the web 😉
Now the solution: Go to Impreza -> Theme options.
There to TAB “Advanced”. In the third section “Web page speed” there is a setting “Move jQuery scripts to the footer”. This setting clashes with the PlugIn “DSGVO All in one for WP”, which by the way has a certain logic, because with this setting the scripts are placed downwards, just before </body>. Although this works in favor of the speed, it is also a problem here. Simply deactivate the setting and the PlugIn runs without problems!