There's two possible reasons why you might not be receiving your verification code.
1. Make sure that your number is in international format. For example, the international dialling code for the UK is 44, therefore the UK number 07712345678 would become 447712345678. Also make sure that you remove any leading zero's.
2. We send our verification codes out with the from address as "CLOCKWORK". Unfortunately some networks don't like words in the from field and so they don't deliver the text message.
Please email us at firstname.lastname@example.org if you're having trouble receiving your verification code.