I use Opera 63.0 with HTTPS installed. My computer is a Mac Mini using OSX 10.11.6 (El Capitan).
Something called HSTS suddenly started blocking access to many web sites today — Thursday, October 3 — with no prior warning or indication or anything. I am now unable to access some of my most important and most frequently accessed sites.
Can anyone help me?
I get this instead:
Or I get this: