Hi there, we'd request you to follow the below steps:
1. Try to Pair and repair.
2. Kindly use the same earbuds with a different phone and see if the issue exists.
3. We'd request you to factory reset your phone after
taking a full backup :
https://www.asus.com/support/FAQ/1006346/4 . Also, kindly check with the manufacturer if the issue is with the earbuds.