Hello Ruben,
How are your PDF’s previewing? Are all the details showing up as they should in your LayOut document? Are any viewports/text/annotations missing or in poor quality?
If you are noticing that there are elements not exporting or showing up, I would double-check your document reference links (make sure every image or imported link is connected to it’s respective location before you export your final set).
I would try a test of exporting your set to “medium” size or even “low” quality size and see if that makes a difference.
Also, check to see if your printer has any software updates. If you are on Adobe Creative Cloud, you could see if there’s a newer version of Acrobat Pro (that’s what we use). Adobe has frequent updates to their products, but it would appear to be their software that you might open a ticket with if you’re still having issues. Make a note of any error codes and see if your printer manufacturer knows what they could mean.