Your campaign may break compliance in sending message, so it is blocked or disabled to investigate further. For this case, please feel free to contact us via live chat or email us at firstname.lastname@example.org to get support.
Once your campaign is disabled, all messages will become Failed message and will not be sent.
Once your campagin is re-actived. You have to resend Failed messages by yourself in SMS log or Spending History
Go to Campaigns in the Main Menu => Click on your needed campaign => SMS Logs
If you need some more helps, please feel free to contact us via live chat or email us at email@example.com.