[How to remove a symbol from the back screen]

Suddenly, an unknown symbol popped up on my screen that I am not able to remove. According to the manual, it is Image transfer status, but it doesn't describe how to get rid of it or why it has popped up. Can somebody help me out?

[Not able to shoot video with GFX 100S]

I have used my GFX 100S for stills for about one year, and everything is fine. Now I want to shoot videos as well. After watching tutorials on setting up the camera, I was ready to start shooting. Then the ridiculous issue raised: which button starts and stops the recording? I switched to video mode and pushed the trigger, but nothing happened. I also tried the other buttons, but nothing happened. Could someone tell me what to do? Do I need a special memory card?