The first suggestion we can make is to try logging into youtube.com with a different account than the one you are currently using the like and subscribe on our website. You do have the ability to log into SoNuker.com with the channel you want to receive the services on, but activate a plan and like/subscribe using a different youtube.com account. Please try this first. If this does not work, please continue reading our other suggestions.
Very commonly, this issue occurs because the IP address you are connected with has subscribed to too many channels in the day. The maximum number is approximately 75, so if you have used our websites and perhaps another sub4sub website all in the same day, you have reached this limit.
If you are connected to the Internet using a VPN or Proxies, it is possible those publicly used IP addresses have also reached that limit.
The best solution we can immediately suggest is to try again 24 hours later (if you had used multiple sub4sub websites in the same day), or to disconnect from your VPN or Proxy connection if you are currently using one.
Furthermore, a YouTube account is only able to subscribe to a maximum of 2,000 channels. If you have already subscribed to 2,000 other channels, then this is likely the reason you are unable to successfully register your efforts. The solution in this case is to log into our website with the channel you want to receive the subscriptions back and then when you are activating a plan, log into a different youtube.com account.