Many issues can be resolved through a factory reset of the earbuds. If you wish to perform a factory reset your Melomania 1, please follow these steps:
Place both headphones in the case.
Press and hold both buttons until the earphone status lights briefly turn blue.
At this point, you can release the buttons as the reset procedure is complete.
The earphones will no longer remember any of the devices that have previously paired with them.
You will then need to follow the initial setup procedure from scratch including the manual Bluetooth pairing process, achieved by holding down the earphone buttons for 3 secs to enter pairing mode.