I also have this issue and I'm quite annoyed about it.
It clearly states it ends on the 11th of September but it's gone entirely from the list on F1 World. Last week, I did the Max Verstappen - Zandvoort Challenge on Sunday afternoon with no issues, so I have no idea why they have decided to pull this event early.
Sort it out EA/Codemasters, some of us work throughout the week and don't get the oppurtunity to play until the weekend.
Don't falsely advertise your events.
There were a lot of Weekly Events in F1 22 where lots of people didn't get promised rewards. It seems that this is still the case. Weirdly enough they advertise that with F1 drivers themselves. Very unprofessional.
