Help - NET::ERR_CERT_COMMON_NAME_INVALID After Migrating to New VPS

Please help…

My web server is (include version): EasyEngine v3.8.1 - NGINX (1.14.0)
The operating system my web server runs on is (include version): Ubuntu 16.0.4

I just moved my domain to another vps, with the same as vps before …including settings and configurations.
So…after success moving my old files wordpress data ( wp content and DB ), I think…I just need editing my DNS config in namecheap because it just change the old IP with the new IP.

And… NET::ERR_CERT_COMMON_NAME_INVALID is shown up.

How to fix this…?. Any suggestion and step by step would be appreciated because I am newbie.
Thank you for the help