Jaseslin,
I received your PM and I am pleased to help if I can.
I don't have a workbench so I can't open the 123.ewb attachment.
I looked at the circuit CI-3-pulse.pdf and it looks like it will work, but it relies on the operator releasing the button before C2 discharges via R4.
Otherwise, the pulses will start again. So if, for example, you press S5 you would see continuous series of 5 pulses separated by the delay due to C2 R4 which would be about 2M x 0.22 uF = 0.4 second.
Is this what your simulator shows?
The only potential problem with the circuit that I can see is, if you built one, contact bounce from the buttons would appear in the clock pulse line if the bounces occurred while N1/3 is high.
Len