I am on NTP route level 21 and going for the trophy NTP: The Magic Number which should be unlocked by now. It requires to be route level 20. But still not pinged for me. Very annoying.
Really not sure how these things work. That one def does work though and isn’t bugged so I bet it will pop randomly as you progress
Quite a few of them seem to pop a bit later. I was well into level 11 on the M7 when the trophy for reaching level 10 finally dropped in. Just keep playing and it'll turn up eventually!