SMS verification messages cannot be received

When using SMS as a verification channel, although YCloud Verify provides a universal sender, we recommend that you register your own Sender ID for the countries/regions you focus on to improve the message delivery rate. To start the registration process, please visit the YCloud Sender ID registration page. Or refer to the SenderID registration guide.
If you try to initiate a verification request to certain countries/regions, but receive error XXXX. You can log in to the YCloud console to check geographic permissions restrictions to confirm if any block is set.
If the issue persists, please contact us.