hi
you may try enable “Always Force Download” in WP-Filebase >> Settings >> Download settings. Here is one tip
And maybe another tip also from Fabian's (plugin author)site:
To force PDF download on FTP sites create a .htaccess file in the FTP root directory:
<FilesMatch "\.(?i:pdf)$"> ForceType application/octet-stream Header set Content-Disposition attachment </FilesMatch>>
I copy-pasted from here
I always use his site for documentation and tips - recommending!
