You mean the share sheet like this which is broken af in iOS 11? They’ve jacked up so much with this update. You try to upload a photo from the photos app, using their share sheet and it tells you no twitter account. Yet, it stills posts. Also, they’ve broken ways to allow twitter and FB to allow acces from apps. For instance; if you have an unfollowers app that tracks when you people follow or unfollow you on twitter, it’s also broken, because you get an error stating there’s no twitter account or the app hasn’t been given permission. And, you can’t give it permission cause the setting isn’t there.