Issues Exporting Data to Excel with ClosedXML and template XLSX

I have the following XLSX template:

Issues Exporting Data to Excel with ClosedXML and template XLSX

I have the following XLSX template:

Issues Exporting Data to Excel with ClosedXML and template XLSX

I have the following XLSX template:

Issues Exporting Data to Excel with ClosedXML and template XLSX

I have the following XLSX template:

Issues Exporting Data to Excel with ClosedXML and template XLSX

I have the following XLSX template:

Issues Exporting Data to Excel with ClosedXML and template XLSX

I have the following XLSX template: