Dayz I got Banned for nothing

[SAS TOMMYGUN 0]

Me and my friend have spent about 10 hours trying to find a car and we found one so we remembered the server and went from elecrto to cherno looking looking for car parts and we took them from electro all the way to star soba and fixed it up so he went looking for some scrap metal and he went all the way to elecrto then i stayed and protected the car and as I was prone next to the car waiting for him to come back and I heard gunshots and then it said "you have been kicked (battleye: banned)"

so why did it do that ,now I cant join the server with the car and we have to start all over again please stop this from happening

server: dayz - uk219