Tried testing with those URLs, but neither one of them load at the moment.
Just for good measure, download the Opera installer, launch it, click "options", set "install path" to a folder named "Opera Test" on your desktop,k set "install for" to "standalone installation", uncheck "import data from default browser" and install. Test in that Opera, but do not install any extensions. do it enable the adblocker, do not enable VPN and do not use Opera Sync.
Does it work fine there? Try the same type of thing with Opera Beta and Opera Developer. Maybe it's a bug that's already been fixed.
If still no luck, even if it's fine in Chrome, I'd still check for malware on your system, just in case.