The same exact thing is happening to me.......I have placed 4th, 4 times now......the only one that has counted so far is the one game I managed to come in 1st place....all I can say is I am frustrated as hell at this point, all I want to do is go play ARAM or Draft pick, but because of my weekly missions im forced to play this crap shoot of a no skill all RNG game know as TFT to get account rewards....and when I do manage to come in 4th place it does not count....IM TIRED OF PLAYING TFT, RIOT GET YOUR CRAP TOGETHER, ITS FINE IF YOU WANT TO WAIST YOUR OWN TIME, BUT DONT SCREW WITH MINE!!!