Workflow Notification does not show Data Correctly

Hi! I have a custom workflow that has notification activities.

The Notification calls a Package to Generate the HTML file.

It was working fine then one day the email notification just suddenly displays some blank data.

Some Data will display, some don't. but Via Worklist, all data is being displayed correctly.

My inital thought is that the retrieval of the values is too slow, and before it even finishes, the Email Notification has already been generated and sent.

Any Idea how to solve this issue?

thanks!