After the update to 8.2 ,Opera for Android turns every time to Mobile mode before accessing websites, and only then allows to switch to PC mode.
So any web-server upon connection immediately knows that the client is a mobile device, and bares the access to PC websites for the client. Even if want to access the PC website, new opera would not allow that even when changing to PC layout afterwards.
It is a total disaster. Accessing PC resources from Opera was the last resort in this totalitarian control of what you should see and what you shouldn't. Now Opera has joined the megacorp gang, finally providing them with this mind control.