checkmated [Site "Chess.com iPhone"] [Date "02/19/2018 05:34PM"] [White "Mauriciofarias (968)"] [Bla

I check mated my openent before my time ran out even then I found out I lost on time.
How can this be? [Site "Chess.com iPhone"]
[Date "02/19/2018 05:34PM"]
[White "Mauriciofarias (968)"]
[Black "amateur53 (986)"]

1.e4 c5 2.Nf3 d6 3.d4 d5 4.dxc5 Qa5+ 5.Nc3 Bg4 6.Qxd5 Bxf3 7.gxf3 e6 8.Qd4 Nf6 9.Bg5 Bxc5 10.Qd2 Be7 11.O-O-O O-O 12.Rg1 Nc6 13.Be3 Rad8 14.Qe2 Bb4 15.Bd2 Bxc3 16.Bxc3 Rxd1+ 17.Qxd1 Qxa2 18.Bd3 a6 19.e5 Nd5 20.Kd2 Nxc3 21.bxc3 Qa5 22.Qe2 Rd8 23.Qe4 Rd5 24.Qxh7+ Kf8 25.Qxg7+ Ke7 26.Qg5+ Ke8 27.Qf6 Rxe5 28.Rg7 Kd7 29.Qxf7+ Kd6 30.Qd7+ Kc5 31.f4 Rd5 32.Qxe6 Nd4 33.Qc8+ Kb6 34.Qxb7+ Kc5 35.Rc7+ Nc6 36.Qxc6# {amateur53 vence por tempo}

https://support.chess.com/customer/en/portal/articles/1444849-why-did-the-clock-times-suddenly-change-the-clocks-seem-broken-