When a new required field is detected in your Jira issue type, we block all reporting for your Clients or Public reporters until you, the admin of the destination, make this field visible.
2 solutions to fix the issues. You can either:
Show this field to your reporters in your widget form
Make this field non-required in your Jira issue type and hide in Marker.io.
If you need help or have a question, don't hesitate to ask in the chat :)