Hi @lamatryoshka,
It looks like the website uses a custom theme, and possibly does not include the required WordPress hooks which Complianz needs to load correctly, such as wp_head() and wp_footer();
Could you check whether the behavior is resolved by temporarily switching to a default WordPress theme, such as one of the “Twenty Twenty-” themes?
If the banner does appear upon switching to a default theme, the above would seem to be the most-likely explanation.
Kind regards, Jarno
That was sooo stupid. I’m so sorry. It was missing the wp_footer(). Thank you so much.