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?
20200408_215343.jpg

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 cs@nanomesher.com for quicker response.
Thanks

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

Chris