API KEY server

Good day WC LOVERS I thought maybe if I can reach out to you here, you will be able to assist me. I have purchased the premium version of this Plugin five days ago but even today I still get the error “Connection failed to the License Key API server. Try again later.” I tried to contact via premium support but still no one got back to me. I also sent you an email and got no response.?CAN YOU PLEASE HELP????