Klonopin, Ativan, as well as the other "benzos" are not mood stabilizers, they are anti anxiety meds., producing a calming affect, and often used in adjunt with mood stabilizers,and/or other meds. or used alone.
They are really helpful for Bipolars who are stressed with stuff in their lives while dealing with their illness, kind of slows down the possible triggering into a manic cycle.
Maybe, the poster here needs a combo of different meds that work together in such a way that will bring balance. . . best thing is to talk to the pdoc about alternate meds, or adding any as well as discontinuing any.

Lots of luck to y'all