the /bgrade command is working but I'm seeing this in the console. I'm not on the server right now. I just happened to be on my computer and noticed it:

Failed to run command '/bgrade' on plugin 'BGrade'. (FormatException: Index (zero based) must be greater than or equal to zero and less than the size of the argument list.)
at System.Text.StringBuilder.AppendFormatHelper (System.IFormatProvider provider, System.String format, System.ParamsArray args) [0x000ff] in <fb001e01371b4adca20013e0ac763896>:0
at System.String.FormatHelper (System.IFormatProvider provider, System.String format, System.ParamsArray args) [0x00023] in <fb001e01371b4adca20013e0ac763896>:0
at System.String.Format (System.String format, System.Object[] args) [0x00020] in <fb001e01371b4adca20013e0ac763896>:0
at Oxide.Plugins.BGradeExt.BGradeExtensions.Lang (System.String key, System.String id, System.Object[] args) [0x00011] in <cf938dfce58d437d863258238a7b721c>:0
at Oxide.Plugins.BGrade.BGradeCommand (BasePlayer player, System.String command, System.String[] args) [0x001bd] in <cf938dfce58d437d863258238a7b721c>:0
at Oxide.Game.Rust.Libraries.Command+ChatCommand.HandleCommand (BasePlayer sender, System.String name, System.String[] args) [0x0001b] in <1f139c50123c4b5c9915cf9036846cdf>:0
at Oxide.Game.Rust.Libraries.Command.HandleChatCommand (BasePlayer sender, System.String name, System.String[] args) [0x00015] in <1f139c50123c4b5c9915cf9036846cdf>:0
at Oxide.Game.Rust.RustCore.IOnPlayerCommand (BasePlayer basePlayer, System.String message) [0x000db] in <1f139c50123c4b5c9915cf9036846cdf>:0​

Nevermind. This is from the other building grades plugin :)