You will have to find an instructor as PPG is within the umbrella of microlight (ULM in French), so you have to obtain a ULM-paramoteur class license.
Only an instructor can put you forward for your license, once you are proficient practically, plus you have to pass the ULM examination. Fortunately it is multiple choice with a pass rate set at 75%. There are previous exam papers on line that you can swot up with, highly recommended.
If you french is good visit the FFPLUM website, that is the microlight body for France.
You also need to register your kit with DGAC (French CAA equivalent), then once registered apply your registration numbers/letters to your wing.
From memory it cost €40 for the registration and €75 for the license, amounts may have changed now.