Two sources, one publication block
The same publication block supports both Issuu publications and flipbooks made from your own PDFs with Demona Flipbooks. If your publication is already on Issuu, paste its URL or embed code into the block.
If you have your own PDF, first turn it into a flipbook with Demona Flipbooks. Then copy the finished publication's viewer URL or iframe embed code into the Flipbook (Issuu) block's source field. It recognises both providers; you do not need a separate Custom code (HTML) block.