EHM The Blue Line

Completely new to this, I've made a trade and have received the "Trade between x and x to take place" message, with a red dot displayed to the left. I cannot hit continue or find any other way to keep going. Is there something I must do first to complete the trade?

There should be a button at the bottom part of the news item, where you can confirm the trade.

There have been numerous users who have the wrong resolution in the game, making it impossible to see all the buttons. Try a different resolution if you can't find the button.

Changing resolution did it, much appreciated.