United Nations Associate Contracts Manager interview questions

I received an email inviting me for an online assessment just a day after the application deadline, it went well. Heard from them a month a and half later letting me know that the vacancy had been cancelled but they will notify me if it comes up again, the next day I get a survey that am supposed to fill if I wanted to still be considered for the position,I completed it. Some few days later I get an invitation for another online assessment.Two months later and I have not heard anything from them again.