First of all, it is recommended that you eliminate the USB problem and try to use another USB cable. In addition, please make sure that the charger you are using is not fast charging. If the problem cannot be solved, apply for warranty service in time.
Here is Yocan's after-sales service: https://www.yocanonline.com/warranty-af ... s-service/
Get more on www.yocan.com
If you can't fix it and your product was not purchased from our official retail store www.yocanonline.com, you can take the device back to the store where you bought it, they can help you check which part has the problem.
For more after-sales service information, please refer to this page: