If you are having issues with Hubstaff due to using a firewall on your computer, you will want to ensure our hostnames are whitelisted

The hosts the client uses are:

• • hubstaff.com
  • app.hubstaff.com
  • hubstaff-api.herokuapp.com
  • hubstaff-production.s3.amazonaws.com
  • client-api.hubstaff.com

Please see here for more information on Windows Firewall settings