I'm having trouble editing the pad. I can save it, but not write. I was going to drop a reminder to update the syntax highlighting -- but that is already there, so no immediate need. I've always been able to write on the pads. If you have any thoughts, let me know. Otherwise, I'll keep tinkering...
I don't know much about etherpad. I did not create that pad. Possibly you have to add your name to the top of the list before you can edit?
Darrell