@vivaldi_browser I really like your browser but I really struggle to use this browser due to the constant crashing, especially using youtube. I feel like I’m on my wits end because it just constantly crashes over and over even just trying to mess with the settings.
You might want to read through this (or a similar explainer on why YouTube and uBO aren’t pals): https://www.hollyland.com/blog/tips/make-ublock-origin-work-on-youtube
If you install free Chromium as an alternative browser, because it uses the same engine under the hood, you can see better if you are having a Vivaldi problem or a Chromium problem, in which case V and C will show the same symptoms. Firefox uses its own web engine so you can only see if the extension is the problem.
I read a toot that V did have problems recently but I think they have pushed out an update for that. So hopefully your settings crash might be fixed already.