To start using Virto Alerts and Reminders web part on modern sites/pages of SharePoint 2019 please do the steps as follows.
- To install Virto Alerts and Reminders web part run Setup.exe file as administrator under the farm administrator account.
- Create App Catalog in your SharePoint if necessary: https://docs.microsoft.com/en- us/sharepoint/administration/manage-the-app-catalog.
The .sppkg file will be automatically uploaded to “Apps for SharePoint”. Now you can add Virto Alerts and Reminders on the modern pages/sites.
Note! Please do not use administrator account to install and activate SPFx web part.