Hello,
Enable Elementor page builder for the Static blocks https://xstore.helpscoutdocs.com/article/47-static-blocks and then edit footer and mega menu static blocks using Elementor page builder according to your needs.
To create multilanguage site you need additional plugin https://colorlib.com/wp/wordpress-multilingual-plugins/
Read about fake popup here and how to enable that https://xstore.helpscoutdocs.com/article/110-sales-booster
Regards
