When you are an activist and located in the EU, your NGO thinks about an petition, use directly the official EU portal instead of private portals without obligation.
Make it accessable for all citizens.
https://www.europarl.europa.eu/petitions/en/home
Threshold for these are 1 of 500 Million votes EU wide and the national threshold for at least 7 member states.
Try to make polls in your country, France is currently the petition leader with 200% frequently oversignings.