Just got this email from them. FWIW, was able to pull out the 571 sats that were left.
Dear Bitcoin Magazine App User,Effective May 31st, the Bitcoin Magazine app will no longer offer lightning rewards. An integral provider for to our lightning solution, IBEX pay, has recently announced the suspension of their US operations as you may have already heard.The withdraw feature will no longer be available as of May 31st, 2024, and we advise all users with remaining reward sats on our app to consider the most critical lesson in Bitcoin – self-custody – and transfer them to cold storage.When we introduced lightning rewards, we aimed to provide an easy pathway for new Bitcoiners to earn their first sats while completing our free 21-day Bitcoin education course or reading articles. We take pride in the community of new Bitcoiners our program has fostered.We understand this news is disappointing, and we apologize for any inconvenience this may cause. Thank you for your understanding and continued support.-The Bitcoin Magazine App Team