First of all you connect printer with USB cable and allow windows to install it. It will be ready for wired printing. Now you can go to Control panel and Add Device (not Add Printer but Add Device). It will install device with printer icon but it is not a printer yet.
Go to properties, hardware and note COM port number on which it is installed. Only now you go to Control Panel, Add printer, Choose Local-not Bluetooth, create COM port with the same number you noted if it is not available yet and install drivers by choosing ZD410, add pairing code when requested and here your misery should end. You can read through thousands of forums about this issue online - maybe some solutions will help you, maybe not.
I tried myself two dongles on two computers and failed to install properly but on laptop with build in Bluetooth it went like through butter. Please bear in mind that bluetooth is used not for printing labels but for printer configuration. For installation instructions on a Mac please watch this video on Youtube. This item is in the category "Computers/Tablets & Networking\Printers, Scanners & Supplies\Printers". The seller is "gatolt" and is located in this country: GB. This item can be shipped to United Kingdom, European Union, Antigua and Barbuda, Australia, United States, Bahrain, Canada, Japan, New Zealand, China, Israel, Norway, Malaysia, Mexico, Singapore, South Korea, Switzerland, Taiwan, Belize, Bermuda, Bolivia, Barbados, Brunei Darussalam, Cayman Islands, Dominica, Guernsey, Gibraltar, Guadeloupe, Grenada, French Guiana, Iceland, Jersey, Jordan, Cambodia, Saint Kitts-Nevis, Saint Lucia, Liechtenstein, Sri Lanka, Macau, Monaco, Maldives, Montserrat, Martinique, Oman, Pakistan, Paraguay, Reunion, Turks and Caicos Islands, Aruba, Saudi Arabia, United Arab Emirates, Chile, Bahamas, Colombia, Costa Rica, Dominican Republic, Guatemala, Honduras, Jamaica, Kuwait, Panama, Qatar, El Salvador, Trinidad and Tobago.