Endless runner spawning infinite tiles

So I have a TileManager script who keeps track of player.z(forward position) and spawns infinite tiles in front of him and deletes the ones that he passes. That works fine on unity editor game preview however when i build for android and I try it on my phone, only the start amount of tiles spawns, there is no more tile spawns as I go forward. Posted the script pic below, not sure if I should have since it's kinda big. Any help is much appreciated