Losing Connection to my Wimax after few minutes with Connected status after using a live Mac address

Please help po..after getting a valid mac address and changing it successfully, always my wimax connection will get connected but just after few minutes (5-10 mins maybe) then it will lost connection and status is only Connecting..any advised po will do..Do I need to protect my new mac address then? Do you have any tutorial on how to do that po or ifever how to protect my network connection? Thanks a lot po in advance and God Bless!

same here cotabato

sa tingin ko minalas lang ka lang bro s mga mac na ginamit mo. simple way to protect ur modem is change ur default username and password.