ssl test failed and certificate date issue

Hi WordPress team,

Thank you for providing this support department for all kinds of wordpress issues.

I’m running a small pest control site on wordpress and recently it got hacked and camed red ssl warning screen.

my site url is https://jayspestcontrol.com
after testing with digicert and ssl tests online, I camed to know that my ssl had a venerability that compromised my site.

I don’t know how to fix ssl problem as it was appearing secured on the browser but unsecured on some browsers.

please help me fix the problem. thank you.

The page I need help with: [log in to see the link]