I've been having a problem with my baitcaster reel. first off the drag star won't spin. Also, all of a sudden my reel stopped reeling in line. What's going on?

Lots more information needed brand, model pictures and a how it happened goes a long way.  Will the handle not turn or the spool???

If your able to turn the handle easily but no line is coming in, it sounds like the drag might be loosened to the point it won't move. Try tightening the drag.