Remove the protective film: When first using the microphone, ensure the insulating film on the bottom contacts has been removed.

Check the charging case battery: Make sure the charging case itself has sufficient battery before use.

Inspect the contacts: Check if the charging contacts on both the case and the microphone (TX/RX) are clean, free from dirt, dust, or blockage.

Clean the contacts gently: If needed, use a soft cloth or alcohol wipe to gently clean the metal contacts on the microphone and case to ensure good connection.

Ensure proper placement: When charging, place the microphone firmly and correctly into its slot in the case.