diff --git a/ArchiSteamFarm.CustomPlugins.ExamplePlugin/ArchiSteamFarm.CustomPlugins.ExamplePlugin.csproj b/ArchiSteamFarm.CustomPlugins.ExamplePlugin/ArchiSteamFarm.CustomPlugins.ExamplePlugin.csproj
index a3c09fb46..b93dae068 100644
--- a/ArchiSteamFarm.CustomPlugins.ExamplePlugin/ArchiSteamFarm.CustomPlugins.ExamplePlugin.csproj
+++ b/ArchiSteamFarm.CustomPlugins.ExamplePlugin/ArchiSteamFarm.CustomPlugins.ExamplePlugin.csproj
@@ -6,7 +6,7 @@
     <Copyright>Copyright © ArchiSteamFarm 2015-2019</Copyright>
     <DefaultItemExcludes>$(DefaultItemExcludes);debug/**;out/**</DefaultItemExcludes>
     <ErrorReport>none</ErrorReport>
-    <LangVersion>latest</LangVersion>
+    <LangVersion>8.0</LangVersion>
     <NoWarn />
     <OutputType>Library</OutputType>
     <PackageIconUrl>https://github.com/JustArchiNET/ArchiSteamFarm/raw/master/resources/ASF.ico</PackageIconUrl>
diff --git a/ArchiSteamFarm.Tests/ArchiSteamFarm.Tests.csproj b/ArchiSteamFarm.Tests/ArchiSteamFarm.Tests.csproj
index 833fe6f98..1211c7964 100644
--- a/ArchiSteamFarm.Tests/ArchiSteamFarm.Tests.csproj
+++ b/ArchiSteamFarm.Tests/ArchiSteamFarm.Tests.csproj
@@ -7,7 +7,7 @@
     <DefaultItemExcludes>$(DefaultItemExcludes);debug/**;out/**</DefaultItemExcludes>
     <Description>ASF is an application that allows you to farm steam cards using multiple steam accounts simultaneously.</Description>
     <ErrorReport>none</ErrorReport>
-    <LangVersion>latest</LangVersion>
+    <LangVersion>8.0</LangVersion>
     <NoWarn />
     <OutputType>Library</OutputType>
     <PackageIconUrl>https://github.com/JustArchiNET/ArchiSteamFarm/raw/master/resources/ASF.ico</PackageIconUrl>
diff --git a/ArchiSteamFarm/ArchiSteamFarm.csproj b/ArchiSteamFarm/ArchiSteamFarm.csproj
index 8ccf1a782..fe5bb588c 100644
--- a/ArchiSteamFarm/ArchiSteamFarm.csproj
+++ b/ArchiSteamFarm/ArchiSteamFarm.csproj
@@ -12,7 +12,7 @@
     <ErrorReport>none</ErrorReport>
     <FileVersion>4.1.0.2</FileVersion>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
-    <LangVersion>latest</LangVersion>
+    <LangVersion>8.0</LangVersion>
     <NoWarn>1591</NoWarn>
     <OpenApiGenerateDocuments>false</OpenApiGenerateDocuments>
     <OutputType>Exe</OutputType>
diff --git a/ArchiSteamFarm/ArchiWebHandler.cs b/ArchiSteamFarm/ArchiWebHandler.cs
index 2778749dd..f40905d43 100644
--- a/ArchiSteamFarm/ArchiWebHandler.cs
+++ b/ArchiSteamFarm/ArchiWebHandler.cs
@@ -315,9 +315,9 @@ namespace ArchiSteamFarm {
 						// ReSharper disable once AccessToDisposedClosure
 						async () => await iPlayerService.CallAsync(
 							HttpMethod.Get, "GetOwnedGames", args: new Dictionary<string, object>(3, StringComparer.Ordinal) {
-									{ "include_appinfo", 1 },
-									{ "key", steamApiKey },
-									{ "steamid", steamID }
+								{ "include_appinfo", 1 },
+								{ "key", steamApiKey },
+								{ "steamid", steamID }
 							}
 						).ConfigureAwait(false)
 					).ConfigureAwait(false);
@@ -1367,8 +1367,8 @@ namespace ArchiSteamFarm {
 						// ReSharper disable once AccessToDisposedClosure
 						async () => await iEconService.CallAsync(
 							HttpMethod.Post, "DeclineTradeOffer", args: new Dictionary<string, object>(2, StringComparer.Ordinal) {
-									{ "key", steamApiKey },
-									{ "tradeofferid", tradeID }
+								{ "key", steamApiKey },
+								{ "tradeofferid", tradeID }
 							}
 						).ConfigureAwait(false)
 					).ConfigureAwait(false);
@@ -1425,11 +1425,11 @@ namespace ArchiSteamFarm {
 						// ReSharper disable once AccessToDisposedClosure
 						async () => await iEconService.CallAsync(
 							HttpMethod.Get, "GetTradeOffers", args: new Dictionary<string, object>(5, StringComparer.Ordinal) {
-									{ "active_only", 1 },
-									{ "get_descriptions", 1 },
-									{ "get_received_offers", 1 },
-									{ "key", steamApiKey },
-									{ "time_historical_cutoff", uint.MaxValue }
+								{ "active_only", 1 },
+								{ "get_descriptions", 1 },
+								{ "get_received_offers", 1 },
+								{ "key", steamApiKey },
+								{ "time_historical_cutoff", uint.MaxValue }
 							}
 						).ConfigureAwait(false)
 					).ConfigureAwait(false);
diff --git a/ArchiSteamFarm/Bot.cs b/ArchiSteamFarm/Bot.cs
index d3480cff1..ae5560daf 100755
--- a/ArchiSteamFarm/Bot.cs
+++ b/ArchiSteamFarm/Bot.cs
@@ -448,8 +448,7 @@ namespace ArchiSteamFarm {
 				return true;
 			}
 
-			return permission switch
-			{
+			return permission switch {
 				BotConfig.EPermission.FamilySharing when SteamFamilySharingIDs.Contains(steamID) => true,
 				_ => BotConfig.SteamUserPermissions.TryGetValue(steamID, out BotConfig.EPermission realPermission) && (realPermission >= permission),
 			};
@@ -1866,15 +1865,14 @@ namespace ArchiSteamFarm {
 				return false;
 			}
 
-			switch (paymentMethod) {
-				case EPaymentMethod.ActivationCode:
-				case EPaymentMethod.Complimentary: // This is also a flag
-				case EPaymentMethod.GuestPass:
-				case EPaymentMethod.HardwarePromo:
-					return false;
-				default:
-					return !paymentMethod.HasFlag(EPaymentMethod.Complimentary);
-			}
+			// Complimentary is also a flag
+			return paymentMethod switch {
+				EPaymentMethod.ActivationCode => false,
+				EPaymentMethod.Complimentary => false,
+				EPaymentMethod.GuestPass => false,
+				EPaymentMethod.HardwarePromo => false,
+				_ => !paymentMethod.HasFlag(EPaymentMethod.Complimentary)
+			};
 		}
 
 		private async Task JoinMasterChatGroupID() {