Hello Joyce Nikolaus, You can get back your HP Officejet 4630 All-in-One printer offline to online just follow below link :
Run the HP Print and Scan Doctor to check for the connectivity issues.
If the printer is still offline, restart all the devices such as the computer, the wireless router and the printer and try to connect again.
Set your printer as the Default Printer, with the windows update your default printer might have change to another printer. To change it, go to Devices and Printers, right click on your printer and select Set As Default Printer.