Sub domain off line

while works fine,, which is my main site for traffic, is off line, sending users to an empty shell.

Why might that be happening and what can I do about it?

I put in a support ticket, but thought it might be common enough of a glitch that someone here might have the fix in mind.



I forgot all about the weird bug that puts an empty folder in my ftp called “guitar” and the home page points to that. Been many months since that happened.