ssl issue our website

Hello, I am currently having an issue with our website. We cannot access the website. the website displays this error below:

Your connection is not private

Attackers might be trying to steal your information from www.supportgene.com (for example, passwords, messages, or credit cards). Learn more about this warning

net::ERR_CERT_DATE_INVALID

Subject: www.supportgene.com

Issuer: R12

Expires on: May 12, 2026

Current date: May 18, 2026

PEM encoded chain:

How can it be resolved?