Lenovo LP40 left earbud not working even after full charge

I remove the right earbud first, that one is working fine. I let the left one charge. It was already charged so after 2 min light stops blinking. And it still does not connect to Bluetooth.

[@marky2666]

what did you do in this video? my left earbud wont turn on even after putting it back like that.

[@ryproducciones]

Un pairing and re pairing fixed it for me

[@rainworld1417]

Lenovo LP40 Manual | How to Activate Mono Mode? To activate or deactivate the mono mode in the Lenovo LP40, all you have to do is to pair the earbuds to the device and take out one of the earbuds from the charging case. It will start working by itself. IT WILL WORK TRUST ME IT DID FOR ME

[@surfacesnow]

Same

[@notorious_vamp]

same problem with my lp5 huhu

[@wiskmayer7739]

Same