SSL Cert error after DNS update

Due to this error Configure external DNS for a custom domain | Netlify Docs we updated the A record for from to

We can now get to but receive a error message in Chrome:

Your connection is not private
Subject: *

Issuer: DigiCert SHA2 Secure Server CA

Expires on: 3 Aug 2021

Current date: 25 Mar 2021

Please advise on what’s needed to get the certificates working again.

We handle our DNS through Route 53 and certificates generated on AWS.

I also found this related closed topic [Support Guide] Minimizing impact of load balancer not working.

A post was merged into an existing topic: SSL/TLS certificates fail with A record