I followed the link to that .eu website which then redirected me to https://www.patrick-breyer.de/en/posts/chat-control/

I was expecting to find a big CTA button that I could click to sign some message to my representatives. Instead I found a giant wall of text with "ideas on how to take action" followed by a list of points along the lines of "Is your government in favour? Ask for an explanation" OK, ask how? No links, no email addresses... basically it's just a page saying "if you care about this thing do your own homework and find a way to act"

Whoever made that page needs to look into the concept of conversion rate. As it is right now it's basically useless

On the other hand, templated mass emails to representatives get filtered out.