I am using the HP Smart App to scan three separate pages. I saved each file separating before scanning the next. I was able to view the scanned file as expected. I was asked to check the file manager to view the saved files. I got to know that page 2 and 3 was saved as a single file. You need to ensure that you are scanning a document from HP Scan can be stored as a single PDF file.
It is easy to change the Scan Preset to Photo. If you choose the Photo option, each file is stored as a separate JPG file. Else, scroll down to the bottom of the file to view the rest of the pages. Download the full feature driver and software on the system. The full feature driver contains HP Scan software embedded in it. The Scan software supports scanning multiple PDF files and auto-cropping photos. Before installing the driver, check if it is compatible with the printer model and version of the operating system. While installing the driver, choose the purpose of connection as Home or business. Do the necessary driver settings.
Install the driver with the instructions mentioned on the screen. You need to select the printer name from the list. After a while, the printer starts to print. This indicates that the driver is installed properly. Attempt to scan from the printer to check if the issue is resolved.