Issue with creating a BP keypad doorlock

Hello everyone,

I have been trying to create a keypad recently, one that in function the player has to know the number combination of (through hints) before inputting the combination to cause something to happen, like a door opening for example.

I have bought assets in the past but they have never really worked out for me, so I went out to see if I could do it myself, I followed examples like the one created by Epic Creating Virtual Keyboard Interactions | Unreal Engine Documentation I followed it to the letter but for some reason the thing does not function.

I have tried this in 4.18 and now in my current build in 4.20 and it does not work in either of them, I cannot press any of the buttons and as a result I am left wondering if the widget component is broken or I have overlooked something, is there anyone that can help?