trial license

#1
i just downloaded litespeed ent. and i get trial key first time . but i have got an error message on logs:

":License key operation failure: ERR LCT.2: Your trial period has terminated. Please contact sales if you need to extend your trial."

what must i do ?
 
#3
my ip address is 212.156.51.102. 3 or 4 times i get it via this address.
i tried one more time via 3G , but i don't know this ip. nothing has changed.

thanks for your help.
 
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