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Balance at 0 despite payment
When a print job starts, the device software first withdraws the entire credit, so the credit balance is 0 during processing. Only when the job is finished, the remaining credit is replenished. However, if an error occurs during processing (e.g. paper runs out or other), the credit balance remains at 0 until the error is corrected.
Long waiting time for printout
As long as LEDs on the front are still flashing, the device is still receiving data from the server or is still processing complex graphics. So please wait ...