I have the same problem. The flatcable makes a sharp bend and is pretty hard to remove from the connector. I wanted to look behind the motherboard to see if something was broken there, since the USB2 port is dead and had to disconnect the power/volume flatcable and it tore. My own fault. But still something that should be fixable. So I asked Chuwi support where I could buy one.
See : https://dltutuapp.com/ , https://9apps.ooo/ , https://showbox.run/</span>