Approved campaign didn't send

Work your way down the list of possible reasons why... 

1. Please check if the campaign has been approved, listed in the Scheduled Campaign area on the Summary page.
2. Check the scheduled time on the campaign is correct. Please allow up to 5 minutes for processing an SMS campaign to be sent from the scheduled time. 
3. Please allow 45+ minutes from approving an MMS, Add2Wallet & Tap2Buy campaign if it is scheduled to go now.  This allows the back-end processes to be configured for the send. This is especially prevalent for personalised MMSs. The 45 minutes is a pre-set time and allows the QA team time for QC to carry out the necessary checks, for example; valid links included, the code works at checkout if applicable, the image renders correctly on each phone type, and so on.  
4. There are insufficient credits on account.  Check your account has enough credits to cover the send. SMS and MMS credits are separate.
5. The image is over the 500KB limit.  We cannot guarantee delivery of an MMS if the image is over 300KB.
6. Check mobile numbers are correct in the recipient file, i.e. did you perform a clean of the data, possible landlines in the list, has the number been opted out?
7. There may be a problem creating the image - please log it with support asap.