Issue Displaying Multiple PDFs in One Article with Secured PDF Viewer

Today, I purchased Secured PDF Viewer and started using it right away.
I intended to use it in combination with Regular Labs' Tabs & Accordions, so I created the following code in a Joomla article:

{tab title="Terms" alias="terms"}  

    {seqpdfviewer=pdf/terms.pdf}  

{tab title="Ethics Guidelines" alias="ethics"}  

    {seqpdfviewer=pdf/ethics.pdf}  

{/tabs}  

In the above code, the ethics.pdf file is displayed in the Terms tab, while the Ethics Guidelines tab remains blank.

It seems that when there are multiple instances of {seqpdfviewer} on one page, only the last instance is applied, preventing the display of multiple PDF viewers within a single article.

On the Content - Secured PDF Viewer page, it states:

This is very good news you can show multiple PDF in one article.

From this statement, I understood that it is possible to display multiple PDFs on one page. Have I misunderstood this, or is there an issue with the functionality?