Check out the developer guide on how to contribute to PyPDFForm: https://chinapandaman.github.io/PyPDFForm/dev_intro/
It is difficult to make sure that the library supports all the PDF form creating tools out there. So if you run into a case where the library does not work for certain PDF forms created by certain tools, feel free to open an issue with the problematic PDF form attached. I will seek to make the library support the attached PDF form as well as the tool used to create it.