I am unsure what claim form you are attempting to submit.
If you filed your tax return at least eight weeks ago, call the IRS tax refund hotline at 800-829-4477, Monday - Friday, 7:00 a.m. to 11:30 p.m. Or, call the 24-hour assistance number at 800-829-1040 and request assistance from the taxpayer advocate.
If you have lost or did not receive a refund check, you can initiate a search by filling out the Form 3911 you can find this information on the IRS website: Refund Inquiries | Internal Revenue Service or contact the IRS at 800-829-1954 (toll-free) and either use the automated system or speak with an agent.