The ETA information is only available when a sender has selected a destination. If you are not seeing their location, that most likely means they have stopped sharing their location.
Glympse is the pioneer of location-sharing technology. We were founded in 2008 on the premise that location-sharing should be temporary, with the end user always in control to set time limits and geo-boundaries on that share of location. We have evolved from a mobile app focus, building out our platform to include both global enterprise solutions and small business solutions like Glympse PRO.