Fixing...

src/de/steamwar/bungeecore/commands/BanCommand.java

@@ -51,7 +51,8 @@ public class BanCommand extends BasicCommand {
             return;
 
         StringBuilder banReason = new StringBuilder();
-        for (int i = 3; i < args.length; i++){
+        int start = hasTimestamp(args[2])?2:3;
+        for (int i = start; i < args.length; i++){
             banReason.append(args[i]).append(" ");
         }
         String msg = banReason.toString();
@@ -79,4 +80,14 @@ public class BanCommand extends BasicCommand {
             }
         }
     }
+
+    public static boolean hasTimestamp(String time) {
+        SimpleDateFormat dateFormat = new SimpleDateFormat("HH:mm");
+        try{
+            dateFormat.parse(time);
+            return true;
+        }catch(ParseException exception){
+            return false;
+        }
+    }
 }

src/de/steamwar/bungeecore/commands/MuteCommand.java

@@ -47,7 +47,8 @@ public class MuteCommand extends BasicCommand {
             return;
 
         StringBuilder muteReason = new StringBuilder();
-        for (int i = 3; i < args.length; i++){
+        int start = BanCommand.hasTimestamp(args[2])?2:3;
+        for (int i = start; i < args.length; i++){
             muteReason.append(args[i]).append(" ");
         }
         String msg = muteReason.toString();