Problem with Limit switches

Hey,
i'm running LinuxCNC 2.9.4 on a Raspberry Pi 5 in combination with a Mesa Card 7i96S.

I seem to be doing something wrong with my limit switches.
When i manually trigger one Switch all LED's to the coresponding pins to the 4 Limit switches on the board turn on.
They are wired to the board as seen in the picture following
X = 0 / Y1 = 1 / Y2 = 2 / Z = 3
The VCC and Ground are wired in parallel to the 5V and Ground the Mesa card is connected to.

Any help would be appreciated. 

You do not have the 7I96s input common (TB3 pin 12) connected.
The isolated inputs will not function properly without this connected.

Yeah. I switched it to the 24V in the end
TY

This was it!
Thank you very much