Completed sessions are first run through a short analysis before they appear in Analyse. This will usually only take a few minutes from when a session device is taken off a Spot. This is done to ensure that any sessions with short gaps between them are recorded as longer sessions for accurate reporting. This makes Analyse an accurate historical reporting tool rather than a real time platform.
Check that time-period you've selected in the picker at the top of the screen includes today and use the refresh button in your browser to draw any new data.