Sorry I can't type Chinese here,

Recently I discovered my IP ( home) is prohibited by Huaren.us . Every device at home can't log in Huaren.us ( it will show Captcha Challenge and ask Human or Robot. If I choose " I'm not a robot", then it says "verification code inspections too many times, try later ". Therefore, I can never log in Huaren with my Home IP. But if I choose " mobile data" or use VPN , it allows me to log in Huaren.us.

So why this happened? I never did any illegal things with my IP to Huaren.us. I can provide my IP address if you need. Could you please solve this problem for me?