The connection for this site is not secure <website> sent an invalid response. ERR_SSL_PROTOCOL_ERROR error

I have only just noticed this issue and i have tried just about everything, even using the administrator control panel. This blurb of text has been taken from a 3rd party website and i have tried EVERYTHING here:

Reload the Page

This is a quick and easy troubleshooting option to try. Close and reopen your browser and try to load the page again. Something may have been off with your browser, or the site owner might have been reissuing their SSL certificate.

Update Your Browser

Outdated browsers may have security holes that updates will fix. Check to see if you're using the latest version of your browser by going to the browser's main website. Download any updates available.

Clear Your Browser Cache and Cookies

Clearing your browser cache and cookies is another quick, easy troubleshooting method that may solve the problem.

Use an SSL Certificate Checker

Third-party SSL certificate checkers, such as SSL Server Test, will tell you everything about the flagged site, from its IP address to the certificate issuer to the expiration of its certificate. What you find will tell you if the site's problem is simple or more complicated.

Use HTTPS Everywhere

If the above check reveals only a minor error for a site you're familiar with that ordinarily has a valid certificate, take some quick precautions before proceeding as usual. For desktop computers running Firefox, Chrome, or Opera, install the HTTPS Everywhere extension to make sure all your connections are encrypted. This way, even if the certificate doesn't match exactly, you should still have an encrypted connection.

Check Your Antivirus Software

As antivirus software becomes more advanced, it adds new features to protect against the latest threats. One such feature is a firewall that blocks sites not secured with SSL. While this is usually good, it can sometimes conflict with your network settings and mistakenly block some SSL certificates and connections.

To see if this is the problem, try temporarily disabling your antivirus software's SSL scanning feature.

Check Your Computer's Date and Time

An incorrectly set date and time on your device can prevent your browser from verifying the SSL certificate of the site you're visiting. This is because when the browser checks the expiration date of an SSL certificate, it compares it to the time on your computer's clock. Take a look at your computer's date and time to make sure it's accurate.

PLEASE either give me a working solution or fix this issue.