Every Monthly System Maintenance is meant to improve RapidSMS so that you can have the best experience.
Therefore during the Monthly Maintenance window, we do not advise your application to send out SMS, as the SMS may not be delivered.
Kindly wait till the maintenance window is over before enabling your application for sending SMS.
When is the Monthly Maintenance Scheduled ?
The monthly maintenance is scheduled at the first Sunday of each month from 6pm - 8pm.