Button stops working after pressing other buttons.

[Phil]

On this website http://freecoin.tk/ 
When a quiz is complete and then you select a new quiz it doesn't load the new quiz. 

I can't tell why. It seems like the only difference when the quiz completes is this.show=0 

else {
	this.show = 0;
	this
	.userService
	.updateUser();
	}

https://github.com/7--/freecoin-frontend/blob/master/src/app/question/question.component.ts

this.show is a boolean that's used in the html to show either a question or the quiz complete message. 

https://github.com/7--/freecoin-frontend/blob/master/src/app/question/question.component.html

But I change that back when the quiz is selected.

this.qc.show=1;

https://github.com/7--/freecoin-frontend/blob/master/src/app/select-quiz/select-quiz.component.ts