Ciao Patrizio. Are you referring to the feed? If so it could be a recent known issue. See below

https://communityhub.strava.com/general-chat-2/known-issue-strava-feed-delay-9596

Vincenzo I see the routes in home feed and profile feed, it's not a delay problem. Each time I click on any route Strava opens the specific page with all the statistics (time, speed, slope etc.) but I don't see the map. 

This is my last performance as I can see it in my home feed. 

This is my last performance after I click on it in the home feed. As you can see Strava doesn't show the map and if you click on the black space the application crashes and redirects you in the home feed if you are lucky. 

Ciao Patrizio. Sorry for this. Are you currently experiencing the issue? If so have you tried to log out and log in again or uninstall the app? The known issue I highlighted above seems to be solved.

Thanks Vincenzo, I finally solved as you suggested by unistall the app and install it again. Now it seems ok. Thank you!