It was another disappointing home performance for United, which will still feel hard done by on the winning penalty.
United piled on the pressure in the first half, but a lack of precision in the final third cost the home side, unable to find a breakthrough. The visitors actually came closest to opening the score when Russell Teibert hit the near post from an almost impossible angle.
Vancouver took the lead early in the second half in controversial fashion. Matt Watson tried to round United goalkeeper Bill Hamid, who appeared to get all ball on his challenge. Nevertheless, referee Matthew Foerster pointed to the spot, and Camilo duly converted to make it 1-0. Camilo, with nine goals on the season, has scored six goals in his past four games.
United struggled to recover, as the team's league-worst offense again failed to really trouble the opposing goalkeeper. After another home loss, United's record sits at a dismal 2-12-3.