Players unable to access the UI or vehiclesFixed

Howdy,

I have confirmed that I am using the latest version (1.9.0), when a player types in the /buy or /spawn mini, nothing happens. I have confirmed that I was unable to recall, spawn, or kill my mini. I was also unable to use the /buy mini command. I also confirmed the players in question all had permissions to use the commands.

I'm in a similar boat. /license works but all the other commands don't, no errors in chat or console.

Updated

Much appreciated, thanks