"Wattbike Monitor Firmware Updater" can't be opened because it is from an unidentified developer - error message

If you receive this error message when using the macOS please follow these instructions to resolve the issue;

1. Try running the Mac Updater, and click ‘OK’ when notified that the app can’t be opened because it is from an unidentified developer
2. Open ‘System Preferences’
3. Click ‘Security & Privacy’
4. There will be a message that says ‘“Wattbike Monitor Firmware Updater” was blocked from opening because it is not from an identified developer’ — click the ‘Open Anyway’ button
5. A confirmation dialog will appear — click ‘OK’ to allow the app to run
6. Open the app and follow the instructions to update your firmware