you got global banned for whatever reason. You have to contact Battleye support as nobody in here can help you, only battleye deals with bans and unbans.
Battleye support: http://www.battleye.com/support.html
please keep in mind that if you did actually hack or use illegal products then they won't unban you because when it's detected it's saved into their database so lying won't get you anywhere.

The video editing is what the made the video awesome xD

this is actually true, it's much more better to use your fists rather than any of these "melee" weapons.

I found another 4 MP5ks this morning after looting 40+ police stations for about 7 hours, none of them had the OEM buttstock.

Also when you kill a player, all their items inside their backpack and clothes will become invisible. The main problem is when the container is actually full and you can't put items inside it to make the items appear :(

this is true, I checked exactly 51 police stations for the last 7 hours this morning.( I also server hopped 4-5 times at each station because of getting tired of running around for ages ). Couldn't find any magazine or OEM buttstock for my MP5k. I understand how developers want to make guns rare since it's a survival game but looting 50+ police stations for half a day and not finding a single attachment for my MP5k is just too cruel and painful.