I have 34 pdf files on this site https://www.ehlbeck.de/prospekte-sonnenschutzsysteme/. It loads very slowly.
On mobile device it doesn't work. The same on a single site pdf, like this site https://www.ehlbeck.de/terrassendach/terrassendach-solarlux/.
Do you habe an idea to speed up this and that it works on mobile device?
Compress your pdf https://www.ilovepdf.com/compress_pdf and use custom thumbnails (images), otherwise plugin has to fetch the PDF to render its first page.