convert top broken

i tried opening the top to the compartment that holds the top when its down and its stuck when i pull the lever i here it unlock but it only comes undone on the right side (sitting in the car) any ideas what the problem is?

i tried opening the top to the compartment that holds the top when its down and its stuck when i pull the lever i here it unlock but it only comes undone on the right side (sitting in the car) any ideas what the problem is?
what year and model

1995 318ic