I read your post on other thread, and your unit did work for quite a few years.

When I was looking for a pop door opener, I passed on the Chicken Guard, but for a specific reason. I live where raccoons are plentiful. Raccoons are also very capable to open gravity held doors. That is why I chose a gear driven model by a different manufacturer. I can disclose it, but don't want to sound like I'm a salesperson for that company. I can post pix of it as well. I'm quite sure they can send to Europe. Mine has worked flawlessly for 3 years now. I'm totally happy/satisfied with it.
WISHING YOU BEST,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,