I am trying to root Nexus 7 2013 and for the purpuse I need to enable USB debugging. As instructed from multiple resources, to enable developer mode one needs to tap the build number 7 times. Did that, plenty of times, but nothing happens.
I saw this other question on the matter, where the case appeared to be that there were multiple users, but in my case there is just one user on the tablet.
About info picture: http://prntscr.com/rmo70x