Thumbing up comments

it's extremely difficult to thumb up comments on youtube...
It actually worked for a few days in row, but today - it stopped again...
I think bot raters have no sense for now... you need to change a lot of variables to get it to work.

If you have any tips - I / we would be really grateful.

Can you send me your rates please, I need a YouTube thumbs up service provider

What you say if someone provide service like this :
$ for 1-2 hr
$ for 4-6hr
$ for 10-12 hr..
I mean different rates for differ time frame AND STANDS YOUR COMMENT ON TOP AS YOU WANT..
You can pm me if interested..