Haven't received registration link/ after 24 hour mark

Hello,

I registered online today and have not received a registration link. I have read through other discussion boxes stating that the link takes anywhere up to 24 hours to receive. I will wait for the 24 hours and continue to check up on my junk box accordingly. However, what happens if I surpass the 24-hour mark and I still do not receive one? Is there an email I can contact for further support?