Model 8N24 can’t get stem out

I am stuck early. I’ve got the Mosel with 8N24 movement in it, and I can’t get the stem out. I can very clearly see where the button is and I believe I pushed it. I’ve exerted a lot of force on it and it will not move anymore. Either the button is stuck or the stem is stuck despite the button being pushed. Is there anyway to visually tell if the button is engaged? Other advice?

Also, I’ll note that the video instructions that came with this model do not quite match the actual kit I got which is quite frustrating. The videos are for some other kit that is not DIY watch club branded and has slightly different tools.