iFrame not refreshing with Sign In

I have a Retool App with an iFrame to a Sigma Workbook. Access to the workbook is for internal users only, so it is a private embed. The iFrame shows an option to Sign in and when clicked a pop up browser allows users to log into their Sigma account. However, the iFrame does not refresh after logging in with the pop up window. It continues to just show the Sign in button. I have the iFrame Interactions configured with Pop up and Storage and cookies toggled on. Is there a configuration I am missing?