EP T21 Right Earbud Problem

Hi. I’ve had these for a couple months and love them! I’m not sure what happened.

But while the left earbud works perfectly. The right earbud is not playing any sound. I can tell it is working. The red and green lights turn on at different points.

But when I reset them, and pair them, only the left one beeps and connects. The right one still allows me to press it and go to the next track, etc. But there is no sound.

Do you know what to do?

I would try and email support, I haven’t really heard about that problem before