So I was using my ear(1) fine for a few hours then I got home to charge the case. Whilst charging, I wanted to take the buds out to use them etc then I had the below error occur
Basically my left ear was completely disconnected. I tried everything to fix this but what did help was a removal of the ear(1) from my device & app, and then it was good as new.
Not sure why this happened as both ears were at 100%, but definitely one to flag/look into for a future bug.