Thanks, i fixed it with a display none on the notification window.
In our case the problem was the plugin: https://woocommerce.com/document/google-analytics-integration/
Somehow it clashes with GTM4WP (in case of the purchase event). Disabling the Woocommerce Google Analytics-integration did solve it for us. We added tags and triggers in Google Tag Manager for UA (GA4 was already implemented via Tag Manager).
In our case the problem was the plugin: https://woocommerce.com/document/google-analytics-integration/
Somehow it clashes with GTM4WP (in case of the purchase event). Disabling the Woocommerce Google Analytics-integration did solve it for us. We added tags and triggers in Google Tag Manager for UA (GA4 was already implemented via Tag Manager).