Linking to pdf files don't work on iOS

[Codeq2]

Hello,

I've around 60GB of pdf files stored on an JBOD 4 Disk Array. I share these files over ReadyCloud and can access these files over the readyCloud web frontend. But while accessing over the ReadyCloud iOS app, almost all pdf files can't be accessed.

The received filesize is alwas 251Bytes and can't be read by the pdf reader app.

Even creating a web-link also won't let the files to be accessed. the created link always fails.

What can I do to geht the iOS App to work?

ReadyCloud version 2.0.4 (2055)

iOS  13.2.2