Can't install PDFNetPython3 on win

I have follow the guide to pip install PDFNetPython3 on my window 10 cmd, but got this error:

ERROR: Could not find a version that satisfies the requirement PDFNetPython3 (from versions: none)
ERROR: No matching distribution found for PDFNetPython3

I have check my compatible tags and find out there isn’t any wheel file on Pypi that compatible

What can i do to install ? I’m using Python 3.9.2 and here is my list of compatible tags:

cp39-cp39-win_amd64
cp39-abi3-win_amd64
cp39-none-win_amd64
cp38-abi3-win_amd64
cp37-abi3-win_amd64
cp36-abi3-win_amd64
cp35-abi3-win_amd64
cp34-abi3-win_amd64
cp33-abi3-win_amd64
cp32-abi3-win_amd64
py39-none-win_amd64
py3-none-win_amd64
py38-none-win_amd64
py37-none-win_amd64
py36-none-win_amd64
py35-none-win_amd64
py34-none-win_amd64
py33-none-win_amd64
py32-none-win_amd64
py31-none-win_amd64
py30-none-win_amd64
cp39-none-any
py39-none-any
py3-none-any
py38-none-any
py37-none-any
py36-none-any
py35-none-any
py34-none-any
py33-none-any
py32-none-any
py31-none-any
py30-none-any

Thank you for reaching out to us.

Currently we use SWIG.org tool to generate our Python bindings, and SWIG does not yet support Python 3.9, and unfortunately Python 3.x versions are not backwards compatible.

Once SWIG updates to support Python 3.9, then you can generate your own bindings following these steps:

Is Python 3.9 important for you?
Hopefully you can switch to Python 3.8 or earlier, which will work.