After sharing Power Approvals app to a new user they receive the error: "Connection not configured for the data source".

When adding a new user you must share both the app and the SQL connector to the user per instructions from each link below:

Sharing the App to the new user

Sharing the SQL connector to the new user

For additional reference see this KB article:

https://portal.mekorma.com/articles/details/Article/KA-01411/how-do-we-grant-our-new-user-access-to-use-th