Teach pendant estop broken?

Hi,

I think I may have broken the estop on our teach pendant for our UR10 / CB3 ,
I havent used the estop before and turned the stop ( before pressing the button ) and now I have an emergency stop error , even though the estop is disengaged,

Have I broken some contacts on the estop ? how can I replace the e stop on the teach pendant,

Cheers

Jeremy