PDF Embed module on mobile not working


I am facing some issues with my Omeka S PDF Embed module. It is not displaying the pdf file on smartphone, rather forces a download of the file and open it locally. Can somebody help?

The topic has been discussed at Pdf embed plugin not displaying - #5 by Lissmarie but can’t find a way to switch to PDF.js as the PDF Embed provides no options for configuration.

Are PDF Viewer and PDF Embed the same module? I can’t find anything called PDF Viewer (however, there is a module called Simple PDF.

Thanks in advance.