Just tried out the 2-minute method myself and holy crap, it actually works! That's... just so random that it only tallies on Nightwave if it takes at least 2 minutes, lol. Not sure how people find this stuff out so quickly. Big ups to those who found this method out!
OH GOD SAME HERE! I just completed 3 and was checking to make sure they were counting, and they aren't! Stuck at 1/5 over here too ;w;