If the update for your Apple ID is not displayed in the Mac App Store, please test the following workaround:
1. Quit Outbank
2. Move Outbank from the 'Applications' folder to the 'Trash'
3. Start the Mac App Store and install Outbank as a new app. Your data will be retained.
If the problem occurs repeatedly with updates that are not displayed, please contact the Mac App Store Support directly and have the problem with your Apple ID checked and fixed there.