Eval Text Shows - License is Set Correctly

Randomly, when generating a Word document through the API, the evaluation text appears in the resulting Word document. I cannot figure out why this is occuring as the license is set as follows:

Aspose.Word.Document d = new Aspose.Word.Document(ms);
Aspose.Word.License l = new Aspose.Word.License();
l.SetLicense(ConfigurationManager.AppSettings["ASPOSE_LICENSE"]);
d.MailMerge.Execute(GetFieldNames(templatesFields), GetFieldValues(templatesFields));

Hi
Thanks for your request. You should set a license before performing any operations with documents. So please try setting license before creating document.

Aspose.Word.License l = new Aspose.Word.License();
l.SetLicense(ConfigurationManager.AppSettings["ASPOSE_LICENSE"]);
Aspose.Word.Document d = new Aspose.Word.Document(ms);
d.MailMerge.Execute(GetFieldNames(templatesFields), GetFieldValues(templatesFields));

Please see the following links to learn how and when to apply license.
https://docs.aspose.com/words/net/licensing/
https://docs.aspose.com/words/java/licensing/
Also I see that you are using very old version of Aspose.Words. I would like to advice you to renew your license and use the latest version. There are much more features in the latest Aspose.Words.
Best regards.