You are looking at the total column that you chose to view and publish. You need to display AND publish the Net column to see results and to publish the results including throwouts.

So, go to view, rearrange columns, click on what columns you want to see where.

to adjust the number of races before you add a throw out
Go to scoring systems
Race Scoring
You will see a discard profile. it should be 0,0,0,0,1,1,1,1 This would give you one throwout after 5 races up through 8 races. If you wanted to have another throw after 10 races it would be 0,0,0,0,1,1,1,1,1,2,2,2,2,2,