The Tabby PDF Embedder Fix plugin provides a fix for an issue which can arise when using the free or premium version of the PDF embedder plugin to embed PDFs within tabs.
If your PDF (embedded using PDF Embedder) within a tab (made with Tabby Responsive Tabs) does not appear when the tab is selected, installing and activating this plugin will fix the issue.
The cost of this add-on including updates and support for one year on a single site is £24.
The Developer option including updates and support for unlimited sites is £89.