Got demoted from g3 to silver from a remake????? FLEX QUE

Not sure whats going on went in to a flex que game we had an afk so my team remade.I had already been placed in gold3 and when the game ended from the reamke it said i am now silver 3 along with everyone else in my flex que lobby.It also says i have placed 13/10 games im so confused i hope i dont have to deal with being knocked down to silver from my gold placement.