How to complete tasks on boxes if ad blocks are not displayed on YouTube?

Question

YouTube

Hello, please tell me what is the reason. In YouTube videos, user ads have disappeared. Tried different browsers, guest and not, scanned the computer for viruses with different scanners, checked the host, DNS. Anti block is also not installed. I didn’t find anything, still a couple of days, there is no advertising and that’s it, I don’t know where to look for the reason. I sometimes perform expensive tasks on YouTube with a change of IP, so advertising is important to me.
I have suspicions about VPN, that he somewhere, or something, prescribed it, but where I don’t know where to look anymore.
Thanks in advance.
There is no annotation, the usual banner advertising goes to the right of the video, or in the video itself.
Here is a screenshot of such an advertisement for those who don’t understand what kind of advertisement prntscr.com/eqqrsw

Answer 1

As a rule, in such cases, it is recommended to clear cookies or perform tasks in incognito mode , in which cookies are not stored. This mode is present in almost all browsers.

Answer 2

All these conditions are fulfilled, I know it.