We will try and answer Questions in this forum. If you are having any issues with iScore Baseball, this is probably the best place to start. You can also search historical posts here.
There is not a way to edit a game online. That edit button is used to fix a case where a game is scored between two cell towers with different times, and the events get bad timestamps as a result. This is very rare and will only display additional information when that situation is recognized.
Editing is done from Pitch by Pitch on the device itself.