1. Open the printer, check the ribbon inside, and check whether there is paper jam or no paper feeding. After checking according to the above steps, if you still cannot print the invoice, you need to contact the printer service provider.

2. Is the invoicing tray locked? If you do not copy and file taxes within the specified time every month, the tax bureau will lock the invoicing tray. If the invoicing disk is locked, you need to bring the tax control disk and business license to the tax bureau window to unlock it. Now you can apply for unlocking in the online tax office.

3. For problems with the invoicing software, you need to contact the tax control disk service provider.