Hi Kaye17,
I understand that you are having an issue with printing multiple page PDF documents on your HP Officejet 4630 printer. I will try my best to help you with this issue. To better guide you, could you please tell me what operating system you are running on your computer and how you are connected, wireless or with a USB cable?
I suggest that you update your Adobe Products on your computer. If you are windows, clear your Temp Folder and download the HP Print and Scan Doctor and run. Then try Resetting the Printer to clear out any errors in the control panel. Make sure the printer is plugged directly to a wall outlet and not a power bar or surge protector. Make all updates for the computer and the printer are done as well.
I hope this helps, if you have a Mac operating system, please let me know.
Thank you,