It is so sad since I purchased 128 sd card but it deosn't work. When I try to format it in the app it will just get to 80% but it get and says"failed to format your micro sd card. try again later". I even tried to format it to fat32 using a third party tool. For sure the problem is not in the card but I think tapo wants us to subscribe to their very expensive cloud storage. if this won't be fix I might consider switching to a different brand which local storage works fine not like tp.