Cannot print or save PDF on Android

Hi all

I'm using the Radaee PDF cordova plugin (v1.4.2) and managed to integrate it into our Ionic project. We're downloading a PDF within the app via API, store it as file, then open it in Radaee PDF viewer, which is all working fine.
The problem: When clicking the context menu at the upper right corner, the buttons for "Save" and "Print" are greyed out, hence we cannot save or print PDFs. Any idea what's the issue there?

Thanks in advance.

Dear user,
First verify what type of license you are currently using, check variable "licenseType" in the index.js of youre cordova project, based on:
//0: for standard license, 1: for professional license, 2: for premium license
If license is "standard" then both buttons should be disabled by default.

Otherwise, if license is >= professional, verify that you're effectively opening from fs, and that the extra "READ_ONLY" is not passed to the intent.