I am using Kodak Digi Album pro and I'm new to this tool.
Kodak Digi Album appears to be dead software. There appear to be no real references to the software in standard search engines. (Results consist mainly of references to this page and fake download sites.) Searching Kodak Support also returns no relevant results.
Is there a way to convert my .PAB and .KPL files to JPEG?
If the software does not provide built-in export, what you want may not be possible. There do not appear to be any existing converters, and it is unlikely anyone will create one in the future because the software is no longer available.