I have no clue. I think that the plugin got edited but the text didn’t. To support what I said, I downloaded the plugin and ran it on my private server. I found out that /c c explorer works a treat. the text matched what you actually needed. So I come to the conclusion that the plugin MUST have been edited or a older version was installed. Also I heard that you will need a stack of all the items then explorer challenge will be complete. ADMINS FIX THIS!!!!
-FarmerK
Sorry for the long writing. I felt like i was shakespear 😛 .