I too am having an issue with the USB port. I noticed the port was very tight so I am extra carful when connecting it and it has not moved out of position but starting a few days ago there is a connection issue. Wiggling the power cable causes the power to go on and off so charging is not reliable. I made a video of that and sent it to the retailer. We'll see what happens.
I like the device for what it was designed to be and hope this problem is resolved and mine can be repaired or replaced.