Hi ,there
Thank you for bringing this to our attention.
In order to help you further, we will need more information on this.
1) May you share with us the wordpress version that you are currently using?
2) Could you share with us some numbers that are not receiving SMS so that we can get a better grip on this?
3) May we know if you have turned on debugging for your wordpress? If yes, there will be a file called debug.log in your wordpress folder.
The debug log can be found in \wp-content \debug.log (please share us the file in bold). This will greatly help our investigation.
4) Lastly, can you share with us the MoceanSMS.log file located at \wp-content\uploads\moceansms-woocommerce-logs.
Looking forward to hear from you soon.