Disable email protection only.
What if anyone steal anything from my Email while i disable Email protection ^^
Are you f*cking kidding me? 
What's your email? Gmail? Email doesn't protect it. It only protects emails ports on your computer which aren't used anyway.
What if i disable firewall its more dangerous
Yea if you disable completly the firewall you are right. But its enough if you just open the Ports of Tibia, i dont know them exactly atm. You also can adding under Windows Programms into the Firewall and it only opens it than if the Programm is in use. Should be more safe.
btw: What for a Firewall you mean? The standard Windows one?