Solved

Stuck in "team is in live race

What did you try to do?
Car upgrade, practice laps, staff management all locked

What happened instead?
Strangely setup and strategy could be changed.

Did the bug happen in the app, on PC, or both?
Both:

What is the model of your device?
Samsung Galaxy s6

What is the operating system?
Android

What is the version number of the operating system?
Android 7 I think

What operating system is your PC?
Win 10

Which browser did you experience the problem in?
3 different oney

Can the bug be reproduced?
Don't know how it began. After last race problem is still there

Did not work José. Problem is still there. 
Edit: on my tablet everything works fine. But on my smartphone it's still locked

Please make sure your device is using the correct timezone and correct time for where you live.

Date was wrong, that was the problem. Thank you very much José and Yunus