I've even made a fresh bot for this, and still get this error.
Failed to initialize plugin 'DiscordConnect v1.0.6' (LimitedClientException: Error! You may only use one apikey/client per plugin!)
at Oxide.Ext.Discord.Discord.CreateClient (Oxide.Core.Plugins.Plugin plugin, Oxide.Ext.Discord.DiscordSettings settings) [0x0009f] in <8623905c616349b49594ebac36d5c08b>:0 10kb/s in, 229kb/s out
at Oxide.Ext.Discord.Discord.CreateClient (Oxide.Core.Plugins.Plugin plugin, System.String apiKey) [0x0002e] in <8623905c616349b49594ebac36d5c08b>:0
at Oxide.Plugins.DiscordConnect.Init () [0x0005d] in <eaf1061a326b4d35a7a60b4995eb3ed9>:0
at Oxide.Plugins.DiscordConnect.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x0007e] in <eaf1061a326b4d35a7a60b4995eb3ed9>:0
at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <9affce1cd15c4ec183941adef8db1722>:0
at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <4452f821def6406d834e4149849fe7ea>:0
at Oxide.Core.Plugins.CSPlugin.HandleAddedToManager (Oxide.Core.Plugins.PluginManager manager) [0x00043] in <4452f821d