I fixed it…no one said to open the JS software in the web browser. I tried that, and then I got the console window.
Hey fellow users, just added the z axis extension, followed the instructions, but when it says type in the console, there is no console in the current Snapmaker JS. In the screen shot you can see the console, but nothing happens when I click on it.
I updated the firmware, no issues, changed the z axis limit in Snapmaker JS to 221. The 3d print window reflects this. But as I cannot see any black dos type window to type the M1025 M1, I cannot use the full new height of the extension.