Since Zen is built on the same foundational browser technology as Firefox, it has the same limitations you'll find in Firefox. Namely, it only supports Sidebar Mode. You won't be able to open Flylighter as an in-page popup like you can in Chromium-based browsers (Chrome, Edge, Vivaldi, Brave, etc.).
On this page, you'll find answers to Zen-specific questions.
Pin Flylighter to the Extensions Bar
In Zen, extensions don't pin themselves to your toolbar by default.
To pin Flylighter to the Zen toolbar, do the following:
Click the Extensions icon within the address bar.
Right-click the Flylighter icon.
Click Pin to Toolbar.
After you've done this, you should see the Flylighter icon next to your Search bar.
