Why can’t the product be activated? Q A Possible cause: The equipment is not connected with the network. Solution: First, make sure that the equipment is connected with the network normally. If it is not, try the following solutions. Check the Serial number and activation code input: Make sure the serial number and activation code input is correct. The serial number consists of 12 digits, and the activation code consists of 8 digits. Make sure the Activation Code is valid: Contact TOPDON tech support services for support. The device prompts that the setting is omitted: Contact TOPDON after-sales service for support. 30