Hello, friend. We are sorry that our products and services have left you unsatisfied. We are deeply sorry that our colleague did not respond to your information and provide installation instructions in a timely manner during maternity leave, which has caused you dissatisfaction. We have reviewed the pictures you sent and the fittings inside are fine and not loose. They can be connected and used normally without any issues. We will send you the installation manual. Secondly, I apologize for the goods being detained by customs, as the requirements of Polish customs are not very clear. Later, I learned that you not only need CE certification but also DOC compliance statements, which were provided to you later.