storage can be viewed successfully from aspose, created an application and got client id and client secret and tried using below codes in C# in converting the file
var builder = new ConverterBuilder()
.FromStorageFile("/test.html")
.ToStorageFile("/Test.docx");
and
var builder = new ConverterBuilder()
.FromStorageFile("/test.html", “storagename”)
.ToStorageFile("/Test.docx", “storagename”);
and
var builder = new ConverterBuilder()
.FromStorageFile(“storagename/test.html”, “storagename”)
.ToStorageFile(“storagename/Test.docx”, “storagename”);