cant see shared pdf

Hi UGE , thanks for bringing this to our attention.

What mobile device are you using and what OS is it running?

If you preview the PDF on the Dropbox site directly, does it preview normally?

This will help me to assist further!

Samsung galaxy a50

I don't have the dropbox app installed.
the idea is that when you open the link you can visualize the pdf
however it comes out:
Cannot display pdf (the format is not valid)
this happens with any pdf, even downloading some from the internet and uploading them, it does not display them.

Does the link work if you view it on a desktop machine in a browser?

yes

Could you try using a different browser on your Android to see if this helps?

Does the PDF file meet the requirements here to be previewed? Are you able to download the PDF to your phone directly and preview it from there?