@leocg I'll try by starting Malwarebytes browser guard

I havent seen any pop-ups so far.

@leocg Do I turn off my anti-virus extensions too?

Hello! I've been using Opera GX for a while now, but almost every day I use it after around 1 hour, I get a popup that leads to https://site.adform.com/privacy-center/platform-privacy/opt-out/
Is there any way to fix this? It's driving me nuts.