Check the following points

Is the default administrator password that you entered correct?

If the problem persists, check the items in Before You Contact the Scanner Service Provider first, then contact the distributor/dealer where you purchased this product. Refer to the contact information in the Contact List if supplied with this product, or refer to the contact information in the Contact for Inquiries section if provided in Safety Precautions supplied with this product, and then make an inquiry.

Is the default administrator password that you entered correct?

Solution

You can check the default administrator password by checking whether there is a label or not.

For details about the label, refer to Checking the Product Label.