First, let's make sure this is not a minor technical glitch and that it has not already been addressed in the latest version of the app.
Quit and restart the app
Check the App Store for any new updates
If the issue persists, please send support@invintory.com as much information as possible, including:
The device you are using (iPhone, iPad, or desktop site)
If iPhone or iPad, the iOS version (go to Settings > General > About)
Screenshots or screen recordings of the issue
This greatly helps our technical team diagnose and resolve bugs faster.