COVID WFH Allowance Cheque

Hi, I have received a cheque from HMRC that was for covid wfh allowance for 20-21. Unfortunately , I did not have the availability to cash it in before it expired. I have subsequently called HMRC and they told me they will send me a new one. More than 9 months later, I haven't received a cheque. Can I just claim this cheque through the self-assessment form?

Hi mhpmvp,
To review this you will need to contact HMRC:
Income Tax: general enquiries
Thank you.