Some school districts and personal firewalls block unfamiliar websites for safety reasons. Go to bitsbox.com/go and click Build Apps Now. If you get an error message, either you or your school's IT person should modify firewall settings to allow access to the following websites:

• *.bitsbox.com
• *.bitsbox.io
• *.firebase.com
• *.firebaseio.com
• *.googleapis.com
• *.gstatic.com
• *.codepops.com
• https://bitsbox.firebaseapp.com