You arrived here because somehow a ggt.gaa.st URL did not get intercepted by Giggity properly. Likely you don't have Giggity installed on your phone, or it's an ancient version. Or if you're using Firefox, you may have to click on a little Android logo in your address bar now.
Or, maybe you're on your PC instead of on a phone, in which case hopefully a QR code just appeared below, which you should be able to scan using your QR scan/camera app.
Giggity is an Android app that lets you conveniently browse conference schedules on Android phones.