For some reason, the digit display block does not work. When i put the block somewhere it does not show a display.

Please help not even my dad could solve this.

I mean, the solution looks kinda bad but at least it shows something.

In the games description:

Limitations:

The project has many limitations, but in particular I want to list a few things that have been shown in the video series, but which are not available in the current project. (I know these discrepancies are annoying, and I apologize for them, but it's hard to avoid without slowing down work on the videos which are my main focus currently).

• In episode 1, some groups of inputs/outputs have their decimal value displayed next to them. I plan to add this back in the future.
• In episode 2, some signals are animated moving along the wires to help the explanation. This is currently not planned for the release version.
• In episode 3, displays placed inside of a chip will be visible on the face of that chip when it's used inside of other chips. I still need to figure some stuff out with this feature, but it will be added in a future update.

it's not a bug 

"In episode 3, displays placed inside of a chip will be visible on the face of that chip when it's used inside of other chips. I still need to figure some stuff out with this feature, but it will be added in a future update."