The new key was failed?

[wb3214694]

i just buy a i month key in 5 min ago , and i download the demonbuddy log in . they just stop working. when i second log in, they show:
Max Sessions
Authentication failed
what is wrong ? could i get help ?
sorry for my grammar and thanks

 

[Tony]

How To: Attach your HB-DB log file [with pictures]