Edit a public key for prod env on Developer HUB

Hello, I need to change a public key on developer hub for a prod application. It tells me to contact the support but the link redirect to a page with many options and no option there seems to be a suitable for my need.

Hi Cornelio, please complete this form: Partner onboarding enquiry form - NHS England Digital.
Let us know your application ID and the public key URL you want to add or update.