Hi, @Sam_K thanks for bringing this issue to our attention.
Please note, as the earbuds support the Master/Slave switch, both of them can pair to your phone as a master device. When the right earbud is master, the Bluetooth name is soundcore Spirit X2, when the left earbud is master the Bluetooth name is soundcore Spirit X2-L. This means when the right side is the masterpiece, in the Bluetooth pairing list the soundcore Spirit X2 is displayed as “connected”, and the soundcore Spirit X2-L is displayed as “not connected”. In fact, the earbuds are normally TWS paired to work.
Hope that can meet your needs. If you have any problems, please drop an email to "service@soundcore.com" detailing the issue and the order information, our soundcore technical support team will take care of your case within 24hrs.