Thank you for the provided screenshots. The view screenshot indicates the popup is using a custom template, however, from the provided information it is not clear if the selected model is passed to the template. You can download and review the demo project on how to Access Current Model in Popup, where a scenario similar to yours is implemented.
If the example does not help you resolve the issue would it be possible to send a runnable example, where the issue is isolated, so I can run and investigate the issue locally.
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