Sorry but that is absolute garbage I have had my S8 since June and now get pop ups in the last 10 days
Don't know if it' related but I had a Bixby update and a software update about the same time
Same here ive been getting ads left, right and center! I think it's related to google. In your settings there's a google settings option and if you click on it, theres something about (opt out ads personalization) but no option to completely remove it. This issue is really getting on my nerves and i'm very frustrated!
I forgot my popup ads stopped! It worked. I deleted Clean Master app and these other apps shown below.
Signal Private Me
Secret Video Recorder
Parallax Infinite Wallpaper
Aquarium 4K Video Wallpaper
Same for me... I don't even have anything installed on this phone because I bought it brand new... had ads straight out the box about 6-7 min. Apart... I really need help before I end up buying a new phone... it seems to be only Samsung that does this... [2 ads popped up as I was typing this...]