You have reached the support team for the NHS App. We do not support the NHS COVID-19 app, which is a different service, so we cannot help with your query.
The NHS App is a simple and secure way to connect you to services at your GP surgery, your GP medical record and other NHS services: https://www.nhs.uk/nhs-services/online-services/nhs-app/
Find help on the NHS COVID-19 app: https://faq.covid19.nhs.uk/
Contact the NHS COVID-19 app support team: https://faq.covid19.nhs.uk/create-case/