I am using the latest version of Vivaldi browser (Vivaldi 5.5.2805.26 (Official Build) (64-bit)) and for some odd reason I can’t use the scroolwheel or the mouse buttons, not even the Up/Down or PgUp/PgDown keyboard keys to scrool the webpages. I need to use Firefox to be able to use this website.
I am on the same version of Vivaldi and don’t have any issues with scrolling here.
Have you checked the guest window or a separate user profile? Does scrolling work there?
You could also check Troubleshooting issues | Vivaldi Browser Help.
Strange. I opened a new private window, I reintroduced my credentials of the site and now it is working. Still, into the old window nothing happens. Just an unresponsive page.
If you’re still encountering the issue, try Vivaldi’s troubleshooting steps?