Two former directors of the collapsed crypto lender Celsius Network have a warning for digital assets firms wishing to avoid a similar fate: “Grow the f*** up”.

Matthew De La Fuente, former head of business operations, and Rohit Sabhlok, former director overseeing trading infrastructure, joined Celsius in February and September 2021 respectively. It was early enough to enjoy the excesses of the last crypto bull market but too late to fix what they describe as structural problems that contributed to the firm’s collapse in June.