The problem with many Ad networks who work with cryptocurrency projects is that they attract low-quality traffic. You set a high bid, their native analytics show tons of clicks, but your Analytics tools on the website show that you get a spare part, at best dozens of clicks. It's not even worth to say that they never convert.
The problem isn't with the website as we get excellent results from the Adwords and Social media. Though, many platforms we tried were bad and expensive.
Could you recommend any Adv network/platform which showed good results for your projects? Please, don't post the network if you have never used it.