no draw!?!

Just played a terrible game but at the endgame king (me) vs rook endgame against my opponent, my opponent had no clue to checkmate with these pieces. He should have been punished because we played up to 50+ moves after a pawn capture and no draw was signaled!! Can someone explain this to me (it is my most recent game of April 17 as of this post). Thanks

[Date "04/17/2018 05:04PM"]
[White "Lydes (1085)"]
[Black "cartop_jr (1028)"]

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 Nc6 5.e3 Be7 6.cxd5 exd5 7.Bd3 Be6 8.O-O O-O 9.Re1 Qd7 10.e4 dxe4 11.Nxe4 Nxe4 12.Bxe4 Bg4 13.h3 Bh5 14.Qb3 Na5 15.Qc3 Nc6 16.Bf4 Rad8 17.Rad1 Bb4 18.Bxc6 Bxc3 19.Bxd7 Bxe1 20.Rxe1 Rxd7 21.Rd1 Re8 22.g4 Bg6 23.Ne5 Rde7 24.Nxg6 fxg6 25.Kg2 Rf8 26.Bg3 c6 27.Rd3 Re2 28.Rb3 b5 29.a3 h5 30.d5 cxd5 31.Rxb5 hxg4 32.hxg4 d4 33.b4 d3 34.Kf1 Rfe8 35.Bf4 d2 36.Bxd2 Rxd2 37.Ra5 Ra2 38.Rxa7 Ree2 39.Kg2 Rxf2 40.Kg3 Rfb2 41.g5 Rxb4 42.axb4 Rxa7 43.Kf4 Rb7 44.Ke5 Rxb4 45.Kd5 Rb5 46.Ke6 Rxg5 47.Ke7 Rh5 48.Ke6 g5 49.Kf5 Kh7 50.Kg4 Rh1 51.Kxg5 Rg1 52.Kf5 g6 53.Kf6 g5 54.Kf5 g4 55.Kf4 Kh6 56.Ke3 Kh5 57.Kf2 Ra1 58.Kg3 Rg1 59.Kh2 Ra1 60.Kg3 Kg5 61.Kh2 g3 62.Kxg3 Ra3 63.Kh2 Kh4 64.Kh1 Ra2 65.Kg1 Kg3 66.Kh1 Kh3 67.Kg1 Kg3 68.Kf1 Kf3 69.Ke1 Ke3 70.Kf1 Kf3 71.Kg1 Kg3 72.Kh1 Rh2 73.Kg1 Ra2 74.Kf1 Kf3 75.Ke1 Ke3 76.Kd1 Rd2 77.Kc1 Kd3 78.Kb1 Kc3 79.Kc1 Kd3 80.Kb1 Kc3 81.Kc1 Rh2 82.Kb1 Kb3 83.Kc1 Kc3 84.Kd1 Kd3 85.Ke1 Ke3 86.Kf1 Kf3 87.Kg1 Re2 88.Kf1 Rd2 89.Ke1 Ke3 90.Kf1 Kf3 91.Ke1 Ke3 92.Kf1 Kf4 93.Ke1 Ke3 94.Kf1 Kf3 95.Ke1 Ke3 96.Kf1 Rb2 97.Ke1 Rb1# {Black Wins}

I don’t get why 91. Ke1 Ke3 92. Kf1 Kf4 93. Ke1 Ke3 94. Kf1 Kf4 95. Ke1 Ke3 is not a draw. That is threefold repetition.

This is not OTB it would be nice if it was automatic.

pawn moves and pawn caputures both count, so from move 61 you add 50 and get 111

This website requires you to claim a draw. Other websites will allow you (at the very least) the option to have your settings have automatic draw claims. This website, no.

 Also, the pawn was captured at move 61.

Alright I see, thanks for responses. 

In both FIDE and USCF, unless if previously claimed by a player, the arbiter claims it at 75 moves or 5-fold repetition

A diagram for anyone who wants it.

 

Chess.com auto-claims the draw after 5 repetitions per FIDE rules I believe, u have to claim after 3, auto claims after 5 and auto claims for 50 move draw rule.