Hello Hicham,
Please upgrade to Dynamic Forms 4.1.4.
You should get a 70% discount automatically upon upgrading from Dynamic Forms 4.0 to Dynamic Forms 4.1, this is apart of our Upgrade Policy:
http://www.datasprings.com/support/...ade-policy Just be certain to log into the same account you used on the store.dotnetnuke.com site to purchase Dynamic Forms 4.0, when purchasing Dynamic Forms 4.1.
Once you upgrade, you should then find the latest available patch under "My Downloads", which is Dynamic Forms 4.1.4.
I feel that an upgrade should fix this issue.
Please let me know if you have any questions.
Thanks,
Ryan