All I will be looking at are pre-match bets that are shared via screenshots before the match starts. You can cash out the bet if you are uncertain during the live event. I can't stop you from doing that. You wont be allowed to delete your screenshots though and once posted, the bet will be counted towards your ROI.
You mean, if I place a bet and send you a screenshot of the same with specific odds but cash it out in between and the game ends in a loss (I mean the game doesn't end in my favor after my cashout), you'll not consider my cashout as something won (ROE in general) and will consider it a loss, am I correct?