anybody experienced the problem to keyin Wifi password to alphabet mode?

i am in Settings to turn on the WLAN. so i chose my Wifi and tried to enter my password but the remote can only key in NUMBERS.

i tried to pressed the # TEXT button but i can only keyin NUMBERS.
I even called TM 100 to explain but they can't and said that this is the first case happened.
tried to reboot my Hypptv but still cannot.

I don't want to change my Wifi password to NUMBERS only to solve this problem because that is not the best solution.

pls help out thanks.