Just won a match on icebox comp, got the victory screen and everything yet the match isn't showing in our match history and we didn't gain any Elo at all from the match, can anyone help? is this happening to anyone else?

I always fire my first few bullets standing and then instinctively crouch after for the spray, I've seen some people saying it's alright to crouch spray and some people saying you shouldn't. Should I try and stop doing it and just keep stan...