If you attempt to upgrade the "Soapbox Events Quickstart for Salesforce" unmanaged package in Salesforce, you may receive the following error message during the installation process.
This app can't be upgraded.
There are problems that prevent this package from being installed.
Unable to install. The unmanaged package "Soapbox Events QuickStart for Salesforce" is already installed in your organization. You will need to uninstall it before installing a new version.
This is an expected result, as Salesforce does not allow for the upgrading of unmanaged packages. This package should not be upgraded (and can't be upgraded). The only package that you'll need to update is the "Soapbox Events for Salesforce" managed package.
Instead of upgrading any Quickstart package, you may need to install an additional Quickstart package to add new components into your Salesforce org. Please open a support ticket with our team in case you have any questions, and reference this support article to help guide you to an answer quickly.