Reprocess or add a new plan button greyed out

Summary:

For one non-worker, we are trying to reprocess for a certain plan and its not possible as the button is greyed out. We were able to do it before and is being processed for three plans as well but now its not possible to even see the button editable

Content (please ensure you mask any confidential information):

Administer workers - under compensation

Version (include the version you are using, if applicable):

23D

Code Snippet (add any code snippets that support your topic, if applicable):