There are severe limitations on syncing data across devices.
SportsEngine does NOT store the detail information about a game. It does not record any details about shot locations, event types, order of events, etc. It ONLY stores the player, team, game description information and the statistic summary information that it displays. It has no knowledge of the vast information the app collects during a game and does not provide a way to store that on the web site.
You can score separate games from several devices. You CANNOT later sync that information together as it does not exist on the sports engine web site.
Additionally the app does not allow syncing across devices outside of SportsEngine use. It a technically difficult task beyond the resources of app's engineer.