The rule: You may not profit from a known or apparent technical issue, pricing error, feed delay, or platform malfunction.
Example of a breach. A trader sees US30 quoted 400 points away from the real market during a feed fault. They open a position, close it as the price corrects for +$3,200, then repeat on the next mispriced quote.
What to do instead: stop trading the affected instrument and contact Support with a screenshot, the time, the symbol and your account number.
What may be reviewed: platform logs, price feed, execution records, and your activity after the issue became apparent.
Possible outcome: affected profits removed, with further enforcement possible.