MoviePass says it will credit customers for the number of days that the service is down, and no new subscribers will be enrolled. “There’s never a good time to have to do this,” said CEO Mitch Lowe. “But to complete the improved version of our app, one that we believe will provide a much better experience for our subscribers, it has to be done.”

Movie ticket subscription services are clearly a challenge to run. This spring MoviePass competitor Sinemia shut down shortly after customers said their accounts were wrongfully terminated. MoviePass has experimented with new plans, offering its original $9.95 unlimited plan, free movie tickets in exchange for watching ads and more. It’s hard to say whether the benefits of improving the app will outweigh the headache of interrupting the service.