Does PDF to xlsx function work in free trial version?

I installed Aspose.PDF through VS2017 Nuget manager.
Tried to convert a PDF file to a xlsx.
The newly created xlsx file includes only two lines:
The first line: Evaluation Only. Created with Aspose.PDF. Copyright 2002-2018 Aspose Pty Ltd.
The second line: [the first line in PDF file]

Is it as expected or I missed something?

thanks!

@cgong2018

Thank you for contacting support.

Please note that, only four items from any collection (for example, only four pages, four form fields, etc.). can be processed in evaluation version. However, in order to avoid Evaluation Version Limitations and test the API in its full capacity, you may apply a 30-days temporary license and evaluate latest version of the API as per your requirements.

In case you face any issue, please feel free to let us know.