stuck in an infinite loading screen

This was written with Google Translate.

I've had the problem since yesterday evening that my game can't load. I installed and sorted my cc for 2 days after deleting everything (it was very messy). And now I just get to the main menu and then I'm stuck in an infinite loading screen.
I've tried a lot, but it doesn't work. I read through, watched videos, asked an online IT specialist and the EA customer service. Now I should introduce myself here.