#1
I'm noticing that random notes throughout a certain song will just not play sometimes. Sometimes these notes play, sometimes they don't. It seems to only happen with the second guitar when played simultaneously with the first.

Anyone know what is causing this? I've had this in the past and it seems like a glitch to me.
#2
Have you asked their support staff?
“Ignorance more frequently begets confidence than does knowledge.”
Charles Darwin