The hydraulic fluid tubes go into a controller that is attached to a turnbuckle to a lever attached to the sway bar. Most likely the lever has moved from its proper position on the sway bar. Readjust this lever so the weight of the car is supported by the springs and not the self levelers. You should have about the same height from center of wheel hub o fender lip on both sides and from to back. Although height distance at back is usually more than front.

Do a search on "SLS" & "self leveling" for more info.