Cant submit info in the visa appointment system

Hi,
filled the DS160, and went to the Visa Appointment Service website to submit the details in order to pay the the fee and schedule an interview.
Ive entered my ds-160 # and got a strange remark " Has already been taken". wont let me continue… what should I do?
thanks

Contact VFS, they can help.

https://www.ustraveldocs.com/in/en/contact-us