Protection Stones

[Kian1354]

Hey Everybody,

Yesterday I purchased a Lapis PS to protect a plot for a friend in Enderpolis. However, when I placed the protection stone it did not work because another player could break inside the fields. I notified my friend/mod Troddenostrich and he tried to help, but said it was beyond his ability. Then I asked Xeadin to come help me. In the end, he figured out that when i place the PS it doesn't work and that when he does it works  . Is there a reason for this? Also, I've noticed that when I do /ps it only shows one command and when I try the others it says insufficient permission or something like that.

Thanks,
Kian

Update: How come you can't sell protection stones in the market now?