One digit on seven segment display not working
It's pretty clear that you don't understand how to use your counters. The fact that you have your carry in (pin 5) grounded on all chips establishes this. So.

1) Connect the clock to all 3 chips. I suspect, although your fuzzy layout gives me a headache when I try to look at it, that you are running your Q3 to the clock of the next chip. Don't.

2) Connect the up/down to all 3 chips.

3) Ground the carry in on the 1's digit only.

4) Connect the carry out of the 1's to the carry in of the 10's. Connect the carry out of the 10's to the carry in of the 100's.

5) Ground all of the Din pins of each counter.

6) Put a 0.1 uF ceramic cap from pin 8 to pin 16 of each chip, and do it with very short leads.