1. Negotiate with the developer: you can contact the customer service staff or the developer of Evergrande to reflect the situation to them and ask them to solve this problem. You can ask the developer to reinstall the balcony door or give you appropriate compensation.

2. Seek legal aid: If the developer is unwilling to solve this problem, you can seek legal aid, bring a lawsuit to the court and ask the developer to take responsibility.

3. Solve it yourself: If you have some decoration experience, you can solve this problem yourself and reinstall the balcony door. But before installation, you need to know the size, material and installation method of balcony door to ensure that the installation effect meets your requirements.