I can't get matchup in ranked mode (pvz heroes)

So it started whit me loging on my old acount i dowloanded everything but sometimes it showed connect to wifi to dowloand stuff so i was thinking ,,okay maybe someting is wrong" the windov showed 3 more times bud it showed i dowloanded everything and then i opened main menu everything looks fine but then when i wanted to play ranked it showed "no match faund" i had my wifi active the whole time so idk what gone wrong please help