I have a post in this forum detailing my experience with Powerlikes. I bought 1 round of powerlikes on a post just a few days ago. They don't work. Like a previous poster said, it's a bunch of dead accounts liking your posts. Sure 99% of them have 20k+ followers, but if you go to their page they haven't posted a picture in months in some cases, and they'll have like 3,000 likes with 1 comment. Or 20 botted comments where some are duplicates so you know they used a comment group. I've even gotten likes from 50k, 100k+ accounts where they'll have posted a pic a few days ago and they're only getting 45 likes. How, if you have 100k+ followers?
If I'm getting 600+ likes from a network of 80 million people, surely I'd get at least 80 followers from the Powerlikes. Which is 0.000001% of the supposed reach of the Powerlikes...and not even that is possible from my experience. Keep in mind I posted original content that I curated myself with a bunch of hashtags.
Also, I have an Instagram business account... So I can see profile visits/reach. 600 Powerlikes and my reach didn't exceed 900. When I got another 50 likes from my own followers that I gained via follow/unfollow my reach doubled. lol....In other words, IG isn't stupid and they know the chances are slim to none that 600 people with 20k+ followers like your pic upon posting. Especially when they aren't conducting a search to find your content, they're just magically and coincidentally going to your page and liking your most recent pic at the same time....Powerlikes don't count towards your reach.