Originally Posted by
spearlymatt
The key was adjusting the derailleur without any tension on it, I believe.
You just learned a valuable lesson. We all weren't saying it just because we like to type. I counted about 6 instances of replies above saying to detach the cable from the FD before making adjustments.
As for the shifter not indicating the right gear, it's possible that the indicator got damaged or there is something in the shifter blocking the pointer. I wouldn't worry about it.