Search Bar doesn't show up - Wordpress Plugin Integration

Hey team,

One of my German Answers clients tries to get the Search Bar running using our WP plugin.
They followed all necessary steps, we double checked all settings and shortcodes but the bar is still not showing up.
The Results Page is working as expected.

The client mentioned they use the Swift Framework Pagebuilder Plugin. Might this plugin somehow interfere with ours?
Is there anything else we could check?

Any help would be greatly appreciated!

Thanks and best,