Hello Imran,
DNN 6.1.3 wasn't around when Dynamic Forms 3.4.41 was released. So therefore there hasn't been any testing against the two softwares. I would recommend upgrading to our latest Dynamic Forms 4.1 as this version fully supports DNN Versions 5.5 and above.
You can purchase Dynamic Forms 4.1 at this link:
http://www.datasprings.com/products...amic-forms Let me know if you have any questions.
Thanks,
Ryan