Thanks for bringing this to our attention. We recommend cleaning the contact pins on the case and earbuds using a cotton swab with alcohol. Charging issues are frequently caused by foreign matter on the metal charging contacts. This can include sweat, grease, ear wax, etc. Please ensure the pins are dried before placing them back on the case. If cleaning doesn't solve the problem, the next thing to check is the balance control by checking the balance control on your source device by going to the "Accessibility" settings, on your music player app, commonly found in the playback or EQ settings, and the balance control on the JBL Headphone App. Lastly, try to connect the headphones to a different device (phone/tablet/music player) to see if it fixes the problem. If the troubleshooting steps do not work, we'd like to work with you directly to address the issues you're experiencing with your JBL Tune Flex TWS. Please contact our customer support.

Thanks for bringing this to our attention. We'd like to work with you directly to address the issues you're experiencing with your JBL Tune Flex. If needed, we'd also like to get more information so we can check your options. Please contact our customer support service via our official website or toll-free hotline.