We are currently running a system upgrade to improve your overall experience.
Trend Micro Community will be back online on Saturday, October 19.
In the meantime, you can contact Technical Support here: https://esupport.trendmicro.com/en-us/home/pages/technical-support/contact/home.aspx
See you soon!
Both HitmanPro and Hitman Pro Alert are security tools for computers. Amir is right that you have to use one security software only on a device to prevent problems like conflicting features that might result to both antivirus software not working properly.