I'm honestly not sure why it isnt working. a quick reinstall makes it work though.

Please say in detail.
What is not working?

after the server restarts, the plugin stops functioning totally. 

No any error message in the console?

nope, no error message in rcon or server console just says unknown command when i try using the /remove command

The plugin did not load successfully, please use the latest version of the plugin or reinstall oxide