And this is why the Acca insurance promotion exists.  Acca insurance offers bettors a modicum of protection on their stakes. It is especially useful for newbie bettors who are still learning how to use the accumulators.
If a bettor places a stake on an accumulator and one of the games go wrong, the Acca insurance will cover the bet and ensure the bettor gets refunded in full usually in the guise of a free bet offer. However, where the Acca bet is free, then the bettor will not be eligible to receive coverage from the Acca insurance. Acca insurance works like this:
A bettor selects a few games and stakes £10 on a seven-fold Acca consisting of Celtic, PSG, Real Madrid, Liverpool, Manchester City, Barcelona, Bayern Munich, and Juventus for the teams to make a straight win.
However, six of the selections are winners with one draw and a loss.
Under standard betting rules, the accumulator ticket is lost along with 100% of the bettor’s stake.
But with Acca insurance, the bettor gets a compensation which comes in the guise of a free bet or bets.
The free bets get credited into the bettor’s account and must be exhausted within a set time (usually a week)