For some reason when i start the game my players go out of the camera zone ? or they get invisible ?

So for some reason when i start the game my players get away from the main camera i think how can i fix this ? this all happened when i started changing the texture of background it was all fine before here is the screenshots : here is my player: http://imgur.com/a/0JLGG my background: http://imgur.com/a/cQf2h my main camera: http://imgur.com/a/15bxZ how the game looks before i start: http://imgur.com/a/jEgP9 while im in the game: http://imgur.com/a/Ami9b when i pause the game: http://imgur.com/a/OlLA9 when i pause the game in the scene: http://imgur.com/a/9bQSo

please help me to fix this