No message is displayed on the top bar (Polylang)

I have disabled WP Rocket and cleared the browser page cache, if it is important to know. Also, in the HTML, the div tag with id=wfspb-main-content is empty (where the message should be). The developer tools console does not contain any errors related to this plugin. It is important for me to understand whether this situation can be fixed so that I know whether to recommend the client to buy the pro version