Hello I have been facing an issue with my document extract from pdf to excel. Some of the documents

Hello

I have been facing an issue with my document extract from pdf to excel. Some of the documents were passing the right data, the others cant seem to provide data or it provides a wrong one. Is there a reason to is? It is good to mention that pdfs are nearly the same. Is there any limitations on trial version so that there is a limit to extracted content? What can be a reason to it?