Bad Q1 or Q2 output on the 4013 chip? Logic probe should show activity on the 4013 at p1 and p13 during lamp test.

Have all of the header pins been reflowed?

Makes sense. That is the common component for each of your issues.

You can verify what is good by hooking up a test lead to TP1 5v on the board and probing around.
Given only that I4 data is working it's either a bad 14013 chip, input resistor, or most likely a bad connection to the board.

yay. Sometimes a bad chip isnt as simple as a blown gate output since the logic probe showed activity. Having a working example to compare to helps in situations like this. Makes sense it was the 4013 tho given your symptoms. have fun