Firstly, please check the spam or junk folders of your email account - sometimes activation emails can accidentally end up in there. Please note that verification emails can sometimes take 5-10 minutes to arrive.
Otherwise, please make sure you have typed in the correct email address - by checking the 'Email sent' page after you submitted your registration.
If you still cannot see it or realise you've typed in the wrong email address, please contact firstname.lastname@example.org and provide as much detail as possible (including your name, organisation, and any additional details that may help us investigate).
Our office hours are 9:00-18:00 UK time, and we aim to respond within 24 hours (excluding weekends and holidays).