Poorly worded. And shouldn't have backed down. If it were me, I'd say something like:
> We're sorry. Due to pending legislation in the European Union Parliament, we will soon be unable to maintain this website for European users. Today, we are testing our block and giving a users a preview of what it's going to look like. We're sorry that this is interrupting your usage- we don't want that to happen either.
> There is still time to prevent this from becoming permanent. Click here to learn more about why this is happening, and click here to contact your MEP to ask them to please help prevent this from happening.
> Again, we are so sorry that we've had to block you today. We hope you'll help us fight to keep the internet open.
But then, I'm Canadian so most of my sentences start with "Sorry".
> We're sorry. Due to pending legislation in the European Union Parliament, we will soon be unable to maintain this website for European users. Today, we are testing our block and giving a users a preview of what it's going to look like. We're sorry that this is interrupting your usage- we don't want that to happen either.
> There is still time to prevent this from becoming permanent. Click here to learn more about why this is happening, and click here to contact your MEP to ask them to please help prevent this from happening.
> Again, we are so sorry that we've had to block you today. We hope you'll help us fight to keep the internet open.
But then, I'm Canadian so most of my sentences start with "Sorry".