Problems with the Fortnite settings?

In the beginning everything was normal. All of a sudden I was playing on other game settings. I wanted to change it but when I changed it I just couldn't press 'apply' ?! So I had to leave her like that. What should I do?

Please try to restart the game and PC first. Also, check for updates. If it is a bug from Fortnite, it will be fixed soon, so be patient.

Nice day!