Need help with rii i8 mini keyboard please anytime

First that please a gentle I just got my Rii i8 mini keyboard and everything seems to be working fine when I use it with my PS4 but the only problem is when I go to use Hulu the keyboard just not respond or at least Hulu does not recognize the keyboard at all has anyone has it had this problem and can help me any help would really really really be appreciated thank you