We may be quite new to your area so there might not many deliveries at the moment. However, if you haven't received any invites at all or are in a busy area such as Manchester or London, please could you visit this page and let me know if you manage to get the notifications working:
http://www.beelivery.com/Driver/Diagnostic.aspx
Let us know if you have any problems by emailing info@beelivery.com