I will preface this by saying it has been a over a year since I have had to pair one of these but I don’t think they should not be flashing blue green. When they are in pairing mode they should only blink blue. It almost sounds like they are in factory demo mode, which can happen when the button is held too long after inserting the battery.
You want keep the battery out for a solid 10 or more seconds to ensure that the device is completely discharged. The reinsert the battery while holding the button but release as soon as the LED comes on. Don’t hold it as that triggers the demo mode.
