I installed the uBlock Origin add on to stop ads while watching youtube. I restarted the computer. uBlock Origin is in Add Ons, and is switched on. However, I am still receiving ads. First ad is before the clip plays. After 5 seconds, I can end the ad. Second ad is really intrusive. It interrupts the clip. Perhaps I misunderstood the capabilities of uBlock Origin, or how to use it. I would appreciate any recommendations Firefox version on my Windows 7 PC is: 79.0 (64-bit) Thanks.