I see a big hole and no plug.
I've only had to use my Dynaplug twice so not an expert. There is a rubber tail from the plug that hangs out of the hole, I trim it. But the plug is still obvious. I don't see a plug on your tire. That is a big hole. Not sure a plug will work? I had a smaller hole on a 600km brevet and the plug worked but I junked the tire afterwards.