Job Seeker's allowance not showing on HMRC app or on new employer P60

I was on new-style JSA for a few months in summer 2023, earning the princely sum of around £1100. I understand this is taxable and as a higher-rate taxpayer there's a reasonable sum of tax to be paid, but it doesn't show at all on my HMRC app. DWP is listed as an employer but the app says 'You did not get any payments from this employer' when I assure you I did. I didn't get a P45 from the DWP when my claim ended, and they haven't sent me a P60 yet. Will they do so, and if so when? If not, how do I tell HMRC about this income?

Hi,

As the JSA ceased during the 2023 to 2024 tax year you will not receive a P60, but, a P45 should have been isssued. If the details are not shown on your online account then you would need contact the JSA department to submt the details to you and HMRC.

Contact Jobcentre Plus

Thank you.