For some reason ST decided to make different SHM apps for the new and the Classic apps. I have no idea why, but it’s a real PAIN for everyone.
You need to pick one SHM and use it as they are not compatible with each other. If you’re using the Classic app then only use the Classic app SHM. Any changes made to the Classic app SHM will not show up in the new app.
How would you like to use the keypad? Did you check out the link I had posted above for some ideas on how to use your keypad.