Yesterday I shot a rock concert and halfway into it the gimbal and the picture stopped working. I tried to change battery and even replaced the flashcard. The connection to my iPhone 7 worked. And I tried to reset both gimbal and camera without luck. So after 20 minutes of trying I had to go back to handheld Canon 5D and it just didn't get as good..... Please! Does anyone have an idea?

I changed back to the old flashcard and it work again. Does the flashcard need some configuration in order to work?