Facebook is reoppening app reviews for developers starting today after pausing them in the wake of the news that data analytics firm Cambridge Analytica improperly gained access to large amounts of user data.

Zuckerberg made the announcement onstage during Facebook’s annual F8 developers conference on May 1 in San Jose, California.

“I know it hasn’t been easy being a developer these past couple months, and that’s probably an understatement,” Zuckerberg said.

Facebook’s relationship with developers has gotten complicated since the British newspaper The Guardian reported in mid-March that Cambridge Analytica improperly utilized the personal data of more than 50 million Facebook users (that number was later estimated to be 87 million at most by Facebook).

A researcher named Aleksandr Kogan created a personality quiz, paying hundreds of thousands users to take the quiz. In exchange, users gave Kogan access to some personal data pulled from their Facebook profile, as well as the data of their Facebook friends. Unbeknownst to the quiz takers, Kogan then gave that data to Cambridge Analytica, violating Facebook’s developer policies. In 2015, Facebook sent a letter to Cambridge Analytica asking the firm to destroy the data it received from Kogan. Cambridge Analytica claims it did, though the New York Times reported that copies of the data could still be found online as of mid-March.

Users began to criticize Facebook over how it failed to stop Cambridge Analytica from gaining access to user data, with some saying it was time to delete Facebook. About a week after The Guardian published…