_mK_XEgDgpj8y8 I had the same issue for quite a while, but I accidentally figured out the solution today. I tried cleaning and it never worked, nor did a reset.
First, connect the earphones to your Macbook like usual. On your Macbook, go into sound settings by clicking on the 🎧 icon in the taskbar. Scroll to the bottom and adjust the balance so that the slider is exactly in the middle.
I don’t know how this has happened, and it has happened only with the Ear(2)s despite me using several other Bluetooth headphones, but this seems to have done the trick for me.
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(I am attaching a couple of screenshots, hope it helps 😄 )