Hi there
I hope this message finds you well. Thank you for reaching out to us.
The application you are currently using, PDF Viewer, is not an Adobe application. To ensure the best experience with opening and viewing PDF files, we recommend downloading the Adobe Acrobat Reader - Mobile app, which is available for free on both the App Store (iOS) and Google Play Store (Android) https://helpx.adobe.com/acrobat/mobile-app-faq.html
Once you have installed the Acrobat Reader Mobile app:
- Open the app.
- Locate and open the PDF file within the Acrobat app.
- Check if the issue persists.
If you encounter any challenges or need further assistance, please don’t hesitate to get back to us.