Tinder suffers sign-in problems due to Facebook's privacy changes.

Facebook announced some changes to data-privacy policies and its API on the platform on Wednesday afternoon.

Not long after, Tinder users on Twitter started reporting that they’d been logged out of the app and were unable to log back into it. Instead, they found themselves trapped in a feedback loop between the two platforms.

Tinder doesn't require social media profile integration to work—users can sign up with their phone number—but many people choose to sign up with their pre-existing Facebook accounts because it makes it easier to use Facebook photos in the app, and to find out if a potential match has mutual friends on Facebook.

As part of its new app integration policies, Facebook will now "need to approve all apps that request access to information such as check-ins, likes, photos, posts, videos, events and groups," according to a blog post from Mike Schroepfer, the company's chief technology officer. Facebook began approving these permissions individually in 2014, but it is now tightening the review process, requiring that apps sign agreements before gaining access to this data.

Schroepfer also wrote that apps will no longer be able to access certain information like religious or political views, relationship status and details, custom friends lists, education, and work history. The changes could have wide-reaching consequences for apps that often rely on this data, including Tinder. The dating app previously included work and education history on users' dating profiles, though it's not clear whether this feature is causing the glitch. "This was part of the changes that we announced today, and we are working with Tinder to address this issue," a Facebook spokesperson said to WIRED in a statement. Tinder did not immediately respond to a request for comment, but a tweet from its official Twitter account acknowledged that "a technical issue is preventing users from logging into Tinder."