MBOX to XLSX conversion not working anymore

Dear support,
I am trying to use your service to convert an MBOX file to an XLSX file. I have used your service for that purpose before and it had worked perfectly.
Now, when I use Online File Conversion | Free GroupDocs Apps or Online MBOX to XLS Converter | Free GroupDocs Apps, it never finishes uploading the file and the green “CONVERT NOW” button always remains greyed out, unable to be clicked.

GroupDocs.Conversion for .NET API. But when trying to convert my MBOX file to XLSX, XLS or XLSM, I always receive the same short error message. I attached a screenshot.
GroupDocs error.PNG (35.1 KB)

Please help me. The online converter worked perfectly before, and I worked on an Excel macro to further process the files that your service outputs. If there is any way to either get the online or the API converter to work, please let me know.

Best regards.

@Nokia3310

Please share the following details and we’ll look into this issue:

  • In case of back-end API, please share the API version that you are using
  • Sample source file
  • Output that you get using back-end API
  • Sample conversion code for .NET API