According to your description, the pin of your network cable interface is bent, which is not covered by the warranty and needs to be repaired. Maintenance costs suggest that you contact the local service center.
If you don't know the contact information of the local service center, you can click on the website to inquire about the nearest ASUS service center: /ServiceCenter.aspx? SLanguage=zh-cn
I hope the above information can help you! Thank you. If the above reply still can't help you solve the problem, you can log in to ASUS Online Instant Easy Service:/Impressionile/imlink.html for further consultation with engineers to help you solve the problem!