Trouble printing to Epson WF-3640

Reset the printing system on your Mac to solve a problem

If you’ve tried all possible solutions and you still can’t print to your printer, reset the printing system. This process deletes all printers from your list of printers, deletes information about all completed print jobs, and deletes all printer presets.

Important: First, try other troubleshooting techniques in Solve printing problems.

1. On your Mac, choose Apple menu  > System Settings, then click Printers & Scanners  in the sidebar. (You may need to scroll down.)
2. Control-click the printer in the Printers list on the right, then choose Reset Printing System.
3. Note: If no printers appear in the Printers list, you can Control-click the empty list and choose Reset Printing System.
4. After you reset the printing system, the list of printers in Printers & Scanners settings is empty.
5. Add any printers again.

Have you installed the latest WF-3640 driver(s) for Mac?

How are you printing from each device? If the phones & iPads are printing wirelessly, your Mac must also. Epson printers typically have special install steps for WiFi vs. USB printing. AFAIK, at least with Epson printers, WiFI & USB drivers & connections are mutually exclusive.