I believe you have opened a support ticket on the same question. For anyone concerned, below is a quote from my response in the ticket:
"Please test adding a group in the report - static or dynamic (without or with specified field for the grouping) depending on your requirements. Then place the Crosstab item in the GroupHeaderSection and set the section's PrintOnEveryPage to true.
Please be aware that if the Crosstab causes horizontal paging in the report, the header would not be printed correctly on each page due to a known issue in the rendering, logged in our system for improvement. Thus consider using proper report's PageSettings to fit the report's content by avoiding horizontal paging.
I hope the above information is helpful.
Check out the Telerik Platform - the only platform that combines a rich set of UI tools with powerful cloud services to develop web, hybrid and native mobile apps.