Cant submit hacking report rounds

I'm having trouble submitting a hacking report. I saved the replay, was able to upload it easily on the hacking report. I had the date, time, server and channel and the player's name all filled out. It was a 12 min. TD game so I tried to leave the "rounds" blank but it insisted I fill that in. So, I put "1". then it said rounds must be interger so I've tried everything. 1-2-3-4; 1-3, I tried to just use single digits from 1 through 12. I'm not sure how it is wanting me to write the numbers. Please help. I love playing TD match and I hate getting shot through the walls while I'm spawning lol. Help would be greatly appreciated.