Check that you are running the latest version of Vivace. If not, please update the latest version.
Please force quit the app and reopen.
How to force an app to close on your iPhone)
If this doesn’t work, please delete the app and reinstall it. You won’t lose your Vivace account.
More information: https://support.apple.com/en-us/HT207618)
If you’re still having a technical issue with our app, please contact us.