Custom Start Date Issue

I downloaded the real names fix and custom database with date which is suppose to be 1 Feb 2018 installed them in correct locations.

So i go to start new career and it shows up update and then select all these files so far it appears fine.

I add the countries I want which is 14 nations around 61 thousand players but I can't select the start date as it seize to do in the guide which is sortitout one it shows three options but all three are greyed out it wont allow me to click on one.

Any ideas? pic included

you selected USA as a playable nation

remove it as this is the issue

So can't have US at all then or is it fine to add it later in the game?

Add later