I need to do this for watching a show on Paramount+. I have a Windows 10 Home PC desktop. I followed a couple tutorials, which led me to my "Extensions" area, saying the ad-blocker would be there and I can deactivate it, but it wasn't there.
Try disabling each extension one by one until you find the one that's the ad-blocker. Just disable one extension, try to use Paramount+, and if it's still not working, re-enable that extension and disable another one, then try again until it works. If you find it, see if it has a whitelist feature that you can add Paramount+ to.