I used Uworld to study and I can honestly say that I was scoring between 57% and 68% on the self assessment tests (75 questions). I took the test on March 29,2017 and got the bad popup, after sitting...
I studied with Uworld and my NCLEX exam stopped at 265 questions. Pearsonvue trick didn't work for me. I believe I failed the NCLEX and I don't believe Uworld