Can I generate pdf forms from SharePoint List based InfoPath forms?
Well, we have a product named Aspose.Cells for SharePoint that handles only Excel file formats. For example, you may convert or render Excel spreadsheets (e.g XLS, XLSX, CSV, Tab Delimited and other formats) to PDF file format.
Can I ask which Aspose product you are using?
Can your product generate a pdf of a list generated InfoPath form?
I am afraid, as I told you earlier that Aspose.Cells for SharePoint performs the PDF rendering is based on Excel spreadsheets file formats only @SharePoint.
Please see the document on the supported file formats and conversion feature: