Switch Edge Universal SSL to DigiCert

I can’t switch Edge Universal SSL to DigiCert.
I have followed the recommendations.

But the answer to the request is
{“result”:{“enabled”:true,“certificate_authority”:“lets_encrypt”},“success”:true,“errors”:,“messages”:}

Are there additional conditions for this?

That sure looks like it was successful. It’s not showing when you visit your site?

The site still gives lets’s encrypt certificate.
Dashboard indicates this too.

I have followed the recommendations for several zones.

The response is
{“result”:{“enabled”:true,“certificate_authority”:“lets_encrypt”},“success”:true,“errors”:,“messages”:}

It has no effect. Сertificate Authority is still Let’s Encrypt.
Site continues to give the Let’s Encrypt certificate.

Has Cloudflare taken away ability to switch certificate authority to DigiCert for Universal SSL Edge (Free plan)?

Is there any other way to do this?