@keepimguy When I try it on soccer games, nothing happens. I assume it found nothing and just not handling it properly?
Also, as someone who used to work in a large UK betting company a couple of things:
The traders will be checking the exchange websites to check for discrepancies and usually compensate quickly, so that might be a factor you need to consider.
BUT it can still happen if you're early/fast enough.
Also, if you are successful betting companies will informally mark you up as an Arber in your account. Most often, they'll let you carry on betting, but you'll probably have a spend limited imposed.