@Anastasija Petrosova
Thank you for your post! It looks like your screenshots weren't uploaded correctly, would you be able to re-upload them?
If you're having issues opening an AIP protected PDF file, you might have to install a protected PDF reader. PDF readers for classified and/or protected PDFs enable you to open encrypted PDFs that contain sensitive information. Protected PDF readers that support Azure Information Protection (AIP) verify that you've been granted permissions to open the document, and also decrypt the content for you.
For more info - Which PDF readers are supported for protected PDFs?
If you have any other questions, please let me know.
Thank you for your time and patience throughout this issue.
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