on gui log in as user then type 192.168.254.1/advanced/acl.html
then if hindi mo macheck, use mozilla firefox with developer mode extension, Right click on the telnet box "inspect element" then find the word disable, delete it or change it with Enable, after that pwede mo na sya icheck, pag ka check mabilisan mo open telnet since hindi yan prermanent check,
on telnet typethis
Login: Firefly
Pass: $P4mb1h1r4N4m4nT0!!
#apinfo>/etc/default.cfg
sncfg commit
sncfg reset
sncfg default
babalik na dyan yung Master mac ng modem mo pwede kana mag generate
or if hindi mo makuha i can help you with teamviewer pero hidi ngayon busy ako e