In this video shows the white light flashing twice here is the reason why and how to fix it.
1. The holder got into Auto cleaning state mode and shows flashing white light twice it also show the same flashing if you put in back into the charging case while the lid is still open as you can see in the video if you close the lid the holder will start to burning whatever left in it to ashes the holder will keep flashing and the charging case will show it as normal charging status
2. To fix it simply just put the holder back into the charging case then the charging case will do the rest for you.
Q : Why Auto cleaning process needed you to put the holder in the charging case and force you to close...