Fortnite installation issues?

My friend has been trying to download fortnite for days but this seems to be prevented. Unfortunately I have no idea anymore, can someone help?

"Click on 'Ok' to repeat the process. Or" enter the path to another folder in the box below that contains the installation package "EpicInstaller-10.15 (consecutive numbers)". "

I thank everyone who helps or tries to help us.

The PC knows what is good and what is not.

Haha.