I have a Tenvis monitor that uses a micros SD card. I have it to watch our 2 dogs when we are gone. Yesterday on the app I chose format SD card. This morning I put it in the adapter and inserted in my Mac and got "The disk you inserted was not readable by this computer." I followed instruction on this site to format the card. I got the message "Erase process has failed. Click done to continue. When I check the camera app there is O mb on the card. Can I fix this? Have I ruined the card?