Why was Antonio Sanchez' Birdman score disqualified for an Oscar?

Statistics

CitySignatures
mexico city (Mexico) 145
mexico (Mexico) 129
df (Mexico) 76
New York (United States) 74
México (Mexico) 59
Distrito Federal (Mexico) 57
Guadalajara (Mexico) 50
Monterrey (Mexico) 48
Los Angeles (United States) 43
Brooklyn (United States) 31
D.F. (Mexico) 28
puebla (Mexico) 23
Boston (United States) 21
Buenos Aires (Argentina) 21
México City (Mexico) 20
Ciudad de México (Mexico) 19
Zagreb (Croatia) 16
morelia (Mexico) 15
Veracruz (Mexico) 14
xalapa (Mexico) 13
MEXICO DF (Mexico) 13
Chicago (United States) 13
London (United Kingdom) 12
querétaro (Mexico) 12
San Juan (Puerto Rico) 12
Miami (United States) 12
Toluca (Mexico) 11
Mérida (Mexico) 11
New York City (United States) 10
México DF (Mexico) 9
San Luis Potosí (Mexico) 9
Lima (Peru) 9
San Diego (United States) 9
san luis potosi (Mexico) 9
Montreal (Canada) 8
Jakarta (Indonesia) 8
Tijuana (Mexico) 8
villahermosa (Mexico) 8
Toronto (Canada) 7
merida (Mexico) 7
Sydney (Australia) 7
Queretaro (Mexico) 7
Chihuahua (Mexico) 7
Santiago (Chile) 7
Paris (France) 7
Baltimore (United States) 7
seattle (United States) 6
cancun (Mexico) 6
Portland (United States) 6
Stockholm (Sweden) 6
austin (United States) 6
Houston (United States) 6
Hermosillo (Mexico) 6
Cuernavaca (Mexico) 5
Celaya (Mexico) 5
Zapopan (Mexico) 5
san antonio (United States) 5
Dublin (Ireland) 5
New Orleans (United States) 5
barcelona (Spain) 5
Pachuca (Mexico) 5
Amsterdam (Netherlands) 5
Minneapolis (United States) 5
NY (United States) 5
Sitka (United States) 5
Madrid (Spain) 5
San Francisco (United States) 5
D.F (Mexico) 5
naucalpan (Mexico) 5
Other locations 910
DateSignatures
2016-09-29 1
2016-03-26 1
2015-12-09 1
2015-04-08 1
2015-03-19 1
2015-03-18 1
2015-03-14 1
2015-03-13 1
2015-03-07 1
2015-03-03 1
2015-02-28 1
2015-02-26 1
2015-02-25 1
2015-02-23 2
2015-02-22 1
2015-02-20 1
2015-02-19 4
2015-02-18 7
2015-02-17 2
2015-02-15 4
2015-02-13 1
2015-02-12 1
2015-02-11 10
2015-02-10 12
2015-02-09 9
2015-02-08 2
2015-02-07 3
2015-02-06 2
2015-02-05 9
2015-02-04 12
2015-02-03 6
2015-02-02 5
2015-02-01 13
2015-01-31 6
2015-01-30 16
2015-01-29 36
2015-01-28 34
2015-01-27 18
2015-01-26 1
2015-01-22 4
2015-01-21 2
2015-01-20 3
2015-01-19 5
2015-01-18 8
2015-01-17 13
2015-01-16 130
2015-01-15 3
2015-01-14 8
2015-01-13 8
2015-01-12 2
2015-01-11 5
2015-01-10 2
2015-01-09 3
2015-01-08 6
2015-01-07 8
2015-01-06 37
2015-01-05 16
2015-01-04 19
2015-01-03 32
2015-01-02 12
2015-01-01 20
2014-12-31 141
2014-12-30 334
2014-12-29 626
2014-12-28 496