I had to buy different power button for the case. Drilled a hole and glued it in place. This button is the adapter to make it work.
On/off switches:
https://www.amazon.se/dp/B0CB8D2HW3
Original model:
https://www.printables.com/model/118750-heltec-lora-32-case-for-meshtastic
The author marked this model as their own original creation.