Twitch is trying hard to get rid of Ad-blockers and allow ads to circulate freely throughout the Platform.for uBo specific questions it's better using the reddit support. i just unistall uBlock Extra and test a lot of websites of below link. The ads are important for the content developers to create more powerful videos as they serve as the source of income for the YouTubers. YouTube shows a number of Ads to users ranging from video ads to sponsorship cards and banner ads. Though Ads may be disturbing, they are the necessary evil. To earn money Google sells Ads on YouTube.
