¿how to embed instagram?

I need help, I have searched all the tutorials and everything has been changed, by facebook.
What I have done so far:
1.- I create an account on https://developers.facebook.com/
2.- I create an application.

I fill in the rest of the data and add the website platform and put my domain.

3.- In advanced I add my domain in domain manager, although I think it is not necessary to fill it.

4.- I add the Instagram Basic Display function.

Can someone help me what I have to put in the following fields? thanks


The last thing they ask me for is two videos of me explaining how I am going to use the data. My English level is low.
Any advice is welcome I have been running it all day and have not been able to get it to work.