I am no coder, so have no idea what this means, but I do know that I can't get this bot is working.

I have got the latest discord dll, I have got the right bot key (I have 6 other fully working Discord bots), I have the right channel ID, I have a validated config file. I have no idea.

The only thing I can see wrong with this plugin is when I reload the server and see:

Could not initialize plugin 'DiscordChat v2.1.2' (JsonException: Snowflake string JSON token failed to parse to snowflake: 'Chat' Path: ['Channel Settings']['Join / Leave Channel ID'])
  at Oxide.Ext.Discord.Helpers.Converters.SnowflakeConverter.ReadJson (Newtonsoft.Json.JsonReader reader, System.Type objectType, System.Object existingValue, Newtonsoft.Json.JsonSerializer serializer) [0x000b2] in <85dc8dcaf65b4f96a2f6c61b75dcaaab>:0 
  at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.DeserializeConvertable (Newtonsoft.Json.JsonConverter converter, Newtonsoft.Json.JsonReader reader, System.Type objectType, System.Object existingValue) [0x00055] in <271c58b7a8684db5a2c92be17a81f252>:0 
  at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.ResolvePropertyAndCreatorValues (Newtonsoft.Json.Serialization.JsonObjectContract contract, Newtonsoft.Json.Serialization.JsonProperty containerProperty, Newtonsoft.Json.JsonReader reader, System.Type objectType) [0x00119] in <271c58b7a8684db5a2c92be17a81f252>:0 
  at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObjectUsingCreatorWithParameters (Newtonsoft.Json.JsonReader reader, Newtonsoft.Json.Serialization.JsonObjectContract contract, Newtonsoft.Json.Serialization.JsonProperty containerProperty, Newtonsoft.Json.Serialization.ObjectConstructor`1[T] creator, System.String id) [0x000b7] in <271c58b7a8684db5a2c92be17a81f252>:0 
  at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateNewObject (Newtonsoft.Json.JsonReader reader, Newtonsoft.Json.Serialization.JsonObjectContract objectContract, Newtonsoft.Json.Serialization.JsonProperty containerMember, Newtonsoft.Json.Serialization.JsonProperty containerProperty, System.String id, System.Boolean& createdFromNonDefaultCreator) [0x0008c] in <271c58b7a8684db5a2c92be17a81f252>:0 
  at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject (Newtonsoft.Json.JsonReader reader, System.Type objectType, Newtonsoft.Json.Serialization.JsonContract contract, Newtonsoft.Json.Serialization.JsonProperty member, Newtonsoft.Json.Serialization.JsonContainerContract containerContract, Newtonsoft.Json.Serialization.JsonProperty containerMember, System.Object existingValue) [0x00143] in <271c58b7a8684db5a2c92be17a81f252>:0 
  at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal (Newtonsoft.Json.JsonReader reader, System.Type objectType, Newtonsoft.Json.Serialization.JsonContract contract, Newtonsoft.Json.Serialization.JsonProperty member, Newtonsoft.Json.Serialization.JsonContainerContract containerContract, Newtonsoft.Json.Serialization.JsonProperty containerMember, System.Object existingValue) [0x0006d] in <271c58b7a8684db5a2c92be17a81f252>:0 
  at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.SetPropertyValue (Newtonsoft.Json.Serialization.JsonProperty property, Newtonsoft.Json.JsonConverter propertyConverter, Newtonsoft.Json.Serialization.JsonContainerContract containerContract, Newtonsoft.Json.Serialization.JsonProperty containerProperty, Newtonsoft.Json.JsonReader reader, System.Object target) [0x00061] in <271c58b7a8684db5a2c92be17a81f252>:0 
  at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateObject (System.Object newObject, Newtonsoft.Json.JsonReader reader, Newtonsoft.Json.Serialization.JsonObjectContract contract, Newtonsoft.Json.Serialization.JsonProperty member, System.String id) [0x00267] in <271c58b7a8684db5a2c92be17a81f252>:0 
  at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject (Newtonsoft.Json.JsonReader reader, System.Type objectType, Newtonsoft.Json.Serialization.JsonContract contract, Newtonsoft.Json.Serialization.JsonProperty member, Newtonsoft.Json.Serialization.JsonContainerContract containerContract, Newtonsoft.Json.Serialization.JsonProperty containerMember, System.Object existingValue) [0x0015c] in <271c58b7a8684db5a2c92be17a81f252>:0 
  at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal (Newtonsoft.Json.JsonReader reader, System.Type objectType, Newtonsoft.Json.Serialization.JsonContract contract, Newtonsoft.Json.Serialization.JsonProperty member, Newtonsoft.Json.Serialization.JsonContainerContract containerContract, Newtonsoft.Json.Serialization.JsonProperty containerMember, System.Object existingValue) [0x0006d] in <271c58b7a8684db5a2c92be17a81f252>:0 
  at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize (Newtonsoft.Json.JsonReader reader, System.Type objectType, System.Boolean checkAdditionalContent) [0x000d9] in <271c58b7a8684db5a2c92be17a81f252>:0 
  at Newtonsoft.Json.JsonSerializer.DeserializeInternal (Newtonsoft.Json.JsonReader reader, System.Type objectType) [0x00053] in <271c58b7a8684db5a2c92be17a81f252>:0 
  at Newtonsoft.Json.JsonSerializer.Deserialize (Newtonsoft.Json.JsonReader reader, System.Type objectType) [0x00000] in <271c58b7a8684db5a2c92be17a81f252>:0 
  at Newtonsoft.Json.JsonConvert.DeserializeObject (System.String value, System.Type type, Newtonsoft.Json.JsonSerializerSettings settings) [0x0002d] in <271c58b7a8684db5a2c92be17a81f252>:0 
  at Newtonsoft.Json.JsonConvert.DeserializeObject[T] (System.String value, Newtonsoft.Json.JsonSerializerSettings settings) [0x00000] in <271c58b7a8684db5a2c92be17a81f252>:0 
  at Oxide.Core.Configuration.DynamicConfigFile.ReadObject[T] (System.String filename) [0x00028] in <99d545163fdd4d57a562df7989f2ca0a>:0 
  at Oxide.Plugins.DiscordChat.LoadConfig () [0x0000e] in <4809d769fdc343e598d6b4f460463782>:0 
  at Oxide.Core.Plugins.Plugin.HandleAddedToManager (Oxide.Core.Plugins.PluginManager manager) [0x0000f] in <99d545163fdd4d57a562df7989f2ca0a>:0 
  at Oxide.Core.Plugins.CSPlugin.HandleAddedToManager (Oxide.Core.Plugins.PluginManager manager) [0x00000] in <99d545163fdd4d57a562df7989f2ca0a>:0 
  at Oxide.Plugins.CSharpPlugin.HandleAddedToManager (Oxide.Core.Plugins.PluginManager manager) [0x00000] in <cc99cb05b42e4ea494cdf294badea406>:0 
  at Oxide.Plugins.CovalencePlugin.HandleAddedToManager (Oxide.Core.Plugins.PluginManager manager) [0x000b3] in <cc99cb05b42e4ea494cdf294badea406>:0 
  at Oxide.Core.Plugins.PluginManager.AddPlugin (Oxide.Core.Plugins.Plugin plugin) [0x00027] in <99d545163fdd4d57a562df7989f2ca0a>:0 
  at Oxide.Core.OxideMod.PluginLoaded (Oxide.Core.Plugins.Plugin plugin) [0x00035] in <99d545163fdd4d57a562df7989f2ca0a>:0  
(Filename: C:\buildslave\unity\build\Runtime/Export/Debug/Debug.bindings.h Line: 35)
No previous version to rollback plugin: DiscordChat 

Does anyone have any tips on how I can resolve this?

I have gone to version v2.1.1, and this version works for me.

I have no idea why, I copied the ID's from the 2.1.2 config (Bot, Chat, Team) and it worked first time. I want to say that I've fixed my issues, but 2.1.2 issues are not solved.