What’s wrong with this 4S LiPo?

This is an almost brand new cell, has maybe 2 cycles on it. During the week since I got it it’s never been mistreated in any way (no overcharge or over discharge, no hot conditions). The first battery in the video is the one I’m asking about and the second one is a 2 year old pack that works completely fine.

What can be causing this? My smart charger won’t charge it, it says “abnormal balancer port connection”.

Should I open it up and try to fix it myself or contact CNHL asking for a replacement? Want to try to avoid waiting weeks for another one.

Thanks