Hi hak,
Thanks for contributing to our forum. I reviewed your account and did not see anything that should prevent you from placing snipes so I suspect there is something unusual on your side of things that is conflicting with our software.
I do not feel I know enough about your situation at this point to offer any specific suggestions, but we created a support case on your behalf earlier today and I see that a member of our team replied to your case to ask for some additional information.
If you are still encountering difficulties of this nature, please reply to that support case to provide the requested information and we will be happy to continue working with you on this.
-Mike