There are several reasons why bet365 accounts can be restricted, including matched betting, unreasonable betting behaviour, GamStop (self-exclusion), and exploitation of bonuses.

A parlay in sports betting is when a bettor makes multiple wagers (at least two) and ties them into the same bet. If any bets in the parlay lose, then the entire parlay loses. However, if all wagers win, the bettor gets a bigger payout.