today I joined a server while they were in a race. I couldn't join. So far ok. After the race the admin restarted the race but I still couldn't join, the "Race" button was inactive. Hope that's easy to fix. Cheers
Restarting a race means that all drivers are still within that session. That's why everyone beeing on the pending list, can't join until restart of the weekend (or switching to next track).