A common mistake is forgetting to send, skip or upload a contract. Many times, bookings don't require a contract, however, people tend to forget to 'Skip' it.
Generally, the process will respect the flow of the booking. Even if the payments are paid/recorded and itinerary issued, the booking will remain in the Request or Terms tab.
If this is the case, please make sure to check the tracking bar from the Buyer tab and also check the contract has been signed, uploaded, or skipped. Once you upload or skip the contract, it will move to Scheduled or Complete.
Similarly if you see a booking with "Deposit" or "Payment." This usually means that you haven't logged the payment for a specific invoice.