Problem with BattlEye

[Terayob]

I'm having the known problem: "Failed to install BattEye Service" during the installation proccess that pops up as you click play in M&B2. I have read that is a common problem and though I've tried everything BattlEye support page says, it doesn't get solve. If someone could help in any way, I will really appreciate it. I have paid for the Beta but now I can't play

Thank you for the help!