If you haven't received your SMS Verification Code, please request for the code again after 1 hour. If you still didn't get it, it means DND (Do Not Disturb) has been enabled on your sim card, and you won't be able to receive bulk sms messages on your sim card.
To fix it
Text START to 2442 on your 9Mobile.
Text ALLOW to 2442 on your MTN.
Text CANCEL to 2442 on your GLO.
Text ALLOW to 2442 on your AIRTEL.
After doing the above, request for the verification code again.
Or join with another number.