A. Check if the app is updated to the latest version. Go to the App Store, search for StudentVUE, and see if an update is available. If so, install it. This may improve functionality and reduce reliance on web pages.
B. Clear the app's cache by going to Settings > General > iPhone Storage > StudentVUE > Offload App. This will remove the app but keep its documents and data. Reinstall the app from the App Store to see if it improves performance.