Domain Name Search Plugin WHMCS Working Error

Hi Team

Hope you are doing well

I purchased 1 WordPress theme from Envato and i am getting some issue whmcs plgin in hosthub theme and i am trying to contact with hosthub support team but nobody will help me and i also trying to contact with hosthub developer team but they send me a video but it is not a solution for me so please give me a solution if you have or otherwise refund my money back because i already waste my 5 to 6 days. Hope you understand.

Thanks & regards