First off, check your spam folder. Second, empty the field, save, and add your email address again and see if it works better. Check the spam folder again.
If that doesn't work, contact our support, provide us your profile name (gccom nick name), your email address and about what time you tried to do it (don't forget your timezone). We can then investigate. the matter We actually know that it fails sometimes, but we don't know why yet. We have quite a lot of logging though, so knowing of a case that didn't work might help us a lot.