I really have no idea what is going on. Simple reasons could be that your ping is too high, try searching for worlds that have a low ping. I don't know what your computer specs are but it could be crashing bc of computer problems on your end. Have you even been banned from any game Battleye watches over (maybe Battlefeild) if so you might get banned even if you have not hacked in DayZ. It could also be a glitch I hear people getting banned by doing something with a flashlight though I'm not sure what the details are tho. Sorry I could not be of more help and gl.