NanoSound 2 display problem

I just received my nanosound dac 2. The sound quality is excellent. The buttons work great. But the display is not working correctly.
See attached photo. Any suggestions?

Hi, this problem is likely caused by a bad contact in the gpio header. Are you using the header extender? If so, please try tightening, turn it around or try without it for a test.

You may also email for quicker response.

Yes, this was indeed the problem. Thank you for the quick help, and for following up with email.