From time to time I play fortnite, last time I played in January, now I want to install but it doesnt show in launcher, and I dont want to remove launcher because then I had to install all engines again? Didnt post on fortnite forum because I dont use it…
Click on the gear icon in the upper right hand corner and then un-select “Hide Game Tabs”. That should fix it. 
OMG! 
gimme your nick on fortnite PM