wai kei chiu

My wife has submitted an online form of SA1 in order to apply for an UTR no. After submission, no confirm email has been received to confirm the submission of the form. When she logged in to her personal tax account using her gateway ID, no submitted forms have been seen in the "Check progress" page. I would like top ask whether she needs to reapply and resubmitted the SA1 online form again? Many thanks.