If you have a newer iOS device, and have updated it to iOS11, have set your default language to Chinese or Korean, the Blackboard App has issues with freezing.
The following is taken from Blackboard’s issues pages:
The Blackboard app is ‘freezing’ on a black screen on some late-model Apple devices running iOS 11 and set to some language settings, including Korean and Chinese. Older device models and iOS versions are not impacted.
On the initial login attempt, the app will appear to log into the Activity Stream page, but it will ‘spin’ indefinitely and never fully load. After force closing the app, subsequent launches will only display the app launch ‘pencil’ image followed by a black screen.
Impacted Devices May Include:
- iPhone 6S
- iPhone 7/7+
- iPhone 8/8+
The issue depends on the width of a text string in relation to the device screen size, so each language setting may impact each screen size differently. The are no known workarounds at this time other than changing the iOS language setting to another language like English. This issue will be resolved by the 3.1 Blackboard app update, which should be available in app stores by late October/early November 2017.