Here is a picture under the playfield...
https://www.ipdb.org/showpic.pl?id=1578&picno=67766

Is it the left switch with white wires means at the wrong place?
image-13 (resized).jpg

As you can see on your 1st picture, white wires are strap with others, so it seems at the right place, the problem is that your solenoid isn't the same. You'd better put an original one and fix the switch on the original braquet, or make a part that activate the switch when the solenoid is activate.

After a better look I see the real problem...the central ramp is cut on your pinball and the blue solenoid might not be there and was probably added to the game...dont know why. You might form a plate in a sin aluminium or stainless steal plate to reproduce this ramp and make an elongated hole to put the little braquet (same as nearest switches on ramp) than activate your misplaced switch)...good luck

Yes, that's look like a kickout hole, but I don't have this pinball and on IDPB we only see a hole at the center of the playfield...
https://www.ipdb.org/showpic.pl?id=1578&picno=7378

I think it could be a great upgrade if the ball is directly launch on the playfield instead of going down under the apron and have to wait to be replayed. But only if it's works fine...