Micro-betting app Betr has become the first sports betting operator to ban the use of credit cards, the company announced Monday at the Global Gaming Expo in Las Vegas. In another effort to promote responsible online gambling, Betr will set deposit limits for users that are 21-25 years old.

By banning credit cards, Betr instead allows payment options such as pre-paid cards or debit cards to make deposits. The company, which was co-founded by entrepreneur Jake Levy and social media influencer-turned-boxing star Jake Paul, also announced that digital branded gift cards from Prizeout will be the exclusive winnings withdrawal option on Betr.