I won my tournament i was in earlier today, so I got a message in my mailbox saying "I qualified for the tournaments next round and won a !00k" What does it mean the next round of the tournament? Nothing happened after i got the message, I just stayed in the completed tournament lobby and it had a button to leave the tournament. I waited for some time to see if it was gonna put me through to a next level or round of a tournament but nothing happened so I eventually clicked on leave tournament, the joined a new tournament again.

It's a bug that needs to be fixed.
The current message make no difference between the final and previous matches.
There is no step after the final, you can leave the tournament and start a new one.

And congratulation for your victory