Hi Jose,
Thank you for your interest in Syncfusion Products.
We are not able to reproduce the mentioned issue “Merge field in the header section are not filled”. We have created simple sample for your requirement. Could you please find the sample from the below link. Try running the sample and let us know if this helps you.
Sample:
F98152-1880463570.zipIf the issue still exist in your side. Could you please provide us with the sample you are trying or modify our sample to reproduce the mentioned issue. So that we can analyze the exact cause of the issue and provide you with clear details.
Please let us know if you have any questions.
Regards,
Poornima