I understand your concerns, but since it is an official EU platform and we have the GDPR, I don't think there's much cause for concern. Even if it uses your countries platform to verify your identity, I don't think they would be able to see which petition was signed just that you verified your identity on the platform as a whole.
In any case hope you stay safe! Yeah I'm intending on sharing it once a month till then!
I've moded mine, it was fairly easy and works amazing! Havent had any issues with image distortion. Most kits the screen is the same ration so shouldnt be an issue