Likes are so important now days is scary as many people cannot provide this sort of service anymore :/ I think this time Youtube stepped up their game and is making it harder and harder to like.
As for everyone else this comes from
the known
"The IP's are the problem + youtube = the problem. I've been struggling with youtube likes for a few months now and pumped lots of money into it but the results aren't great today... I've made + tested webbrowsers bots, http webrequests bots and api bots. Result: they all work for a few accounts only, then youtube just doesn't count your like anymore. If you go to the 'my likes' you'll see the video in there, but youtube just doesn't count the like. For API, they check IP and 'blacklist' the IP very fast. It's mostly not account related but IP related. Also, they then blacklist the API key.
Using a new api key wont make the likes count because the IP is blacklisted. Moving to another IP also wont work because the blacklisted IP will lead to blacklisted accounts. It's very weird shit. Sometimes likes count, then for the next video they dont. It's a big mess which messes with your brains.
And yes, of course I'm using different IP's etc. I have 200+ IP's (no proxies but vpns). I've went through many vpn companies because at first I thought HMA IP's were blacklisted. Getting new IP's from other companies worked for 20 likes or so, then got blacklisted as well. And yes - my test results were based on about 10 accounts per IP. I've even tried more and less accounts per IP. Also I changed delays a lot. Tested short delays, tested with huge delays. Everything on a single thread of course.
And the result after months: nothing... Best thing to do is 1 like per IP per account (no proxies etc). But I have a BIG SURPRISE for all of you guys, you'll see it in a few days and I'm pretty sure you'll be happy with it
Hope this info helps."
​Hope this helps