Great to hear that you liked the concept, graphics and sound.
You are supposed to synchronise the movement of signals (the circles) on different wires in order to connect them.
It is possible that you had difficulty syncing the signals because of the issues I've covered here (as you mentioned). However, if you intentionally keep the signals (very slightly) out of alignment it works better at the moment (because of the bug). This has been fixed in the build that will be uploaded after the voting period.