
You could click ··· menu -->New InPrivate window in Edge browser to open an InPrivate window and check if the website can load in InPrivate window.
Besides, you could click "Proceed to www.ridgewaystudio.com (unsafe)" on the page to see if it opens the website.
If none of the above works, you could try the methods in this link to see if they can fix the NET::ERR_CERT_AUTHORITY_INVALID error: https://kinsta.com/knowledgebase/neterr-cert-authority-invalid/. Non-official, just for reference.
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Best Regards,
Yu Zhou