MoviePass, the subscription-based movie ticket service, was forced last week to borrow $5 million after it reported it could not pay its bills, raising new questions about the embattled company’s viability.

Helios and Matheson Analytics, its parent company, said in a regulatory filing on Friday that MoviePass had experienced a “service interruption” the day before because it could not make “required payments to its merchant and fulfillment processors.”

In a message to subscribers on Friday, the company’s chief executive, Mitch Lowe, apologized for the outage, during which some of its three million subscribers could not check in to see movies, and said the service was “up-and-running with stability at 100%.”

It’s far from the first time MoviePass has dealt with technical glitches and unexpected shifts in service. But after the outage, observers on Sunday sharpened their criticism of the company, which in 2011 set out to transform the industry amid rising theater ticket prices and increased competition from movie streaming services.