BetChance contract: to sign or not to sign?

A couple of players have recently asked me what to do regarding BetChance offer to pay 30% of their balances cash if they sign a contract giving up on the rights to be paid the full balance.
Personally if the money was paid upfront at the time of signing, I would probably take it. As I\’ve said before, I don\’t see how and where BetChance is going to find 100% of the funds over the next 2 years.
Having said this, and while you may want to get legal advice from a lawyer, I don\’t understand why BetChance also requires players that rather wait and be paid the full balance to sign a contract.
BetChance already owes the full balance to the players, so this seems just an excuse for the bookmaker to guarantee itself from future legal action.
If you plan on waiting you don\’t have to sign anything.