not entirely true as I did a c&p for it the time it worked....as all the other times I hadn't  totally cleared the number slot , the first wrong serial i entered seemed to taint the one I was inputting...or something like that...best advice...keep trying and you'll fluke it soon.. ...as I did.. ...

 

Once in a while I look around,
I see a sound
and try to write it down
Sometimes they come out very soft
Tinkling light sound
The Sun comes up again