The PDF generation connects to the internet to process and create the pdf. There are instances where pdf service is either busy or down. Which causes the error “PDF service not available”. Anyway, try to wait for few mins and run the pdf printout again.
If problem persist, try the ff:

  1. Restart your device, then try again
  2. Or try to switch between wifi / 3g / 4g connection. then try again.
  3. If you installed a firewall app, exclude mobilebiz from the apps blocked to connect to internet.
  4. Try typing this url on your device’s web browser and see if it gives you a blank page.. . If it says that you can’t access this website or something, you can ask your service provider why and if they can fix it.