Unfortunately captcha is a must, otherwise people would just exploit it.
It's because of the CAPTCHA that I stopped using this radio. This is not related to the fact that you need to enter every hour on their site, but with the fact that sometimes captcha is so complicated that it is impossible to solve it, which is very annoying!
In my opinion, the guys need to look for other ways of advertising revenue, but for now at least put another type of captcha that would not complicate the process
I think captcha is necessary to prevent exploitation of bots and such.