1. Make sure you are wearing the ear tips and ear wings correctly.

2. Choose the ear tips and ear wings that fit your ears the best. We recommend that you start with size M ear tips and ear wings.

3. Insert the earbud into your ear and find a suitable position for the best fit. If the earbuds are too deep in your ears, it may affect the Bluetooth connection. If you experience connection issues, we recommend that you replace the ear tips and wings with larger ones.

4. Try other sizes of ear tips to ensure the one you're using fits well and create a tight seal. If one earbud feels stable and the other does not, try a combination of ear tips such as medium in the left and large in the right.

5. Please refer to this video on how to use Sleep A30: Wearing Sleep A30 and Accessory Selection | soundcore Support

If you encounter any other issues or your issue has not been resolved, please contact us for further assistance.