If you book a class for 7:00, the class will show up in the “Upcoming Classes” section of your dashboard up until that time, and disappear afterward. If you don’t see it anymore, just open your email confirmation for that class, click on the link inside that email, and start your class!
If it’s before the time you scheduled the class for, and it’s not showing, try rescheduling it. And if that doesn’t work, send us an email to support@baselang.com or use the live chat in the bottom right corner of your screen, you’ve found a bug!