problem in entring keys

I have a problem regarding key master keys. everytime i enter the keys in a minute it stops and again i have to re enter the pin usually only the first number will be changed. can anybody pleaseeeeeee help me out of this. I am really tired of entering keys every minute...

 

what box do u have ?

 

hey, i have pansat 3500SD.I am entering key atleast 3 to 4 times a day,
earlier it was not like that. can you pleas help me out. thank you for your help.

 

Why not install bin and then it will auto roll.

 

Thanks, how to install Bin? I am kind of new to this so don't no much about it...