Having read the notices that we had until 3/31 to register, I began the registration process 2 weeks ago. Once I started the process, we intermittently had issues with newly provisioned numbers being unable to use SMS. Once my registration was complete but before my campaigns could be set up and accepted, SMS across our entire company became intermittent (per user not per message). Now that our first campaign is registered and I have added 40+ numbers to it, not one single number from our account can send SMS. After contacting support, we have been informed that it may take 3 business days for the campaign to be completely registered with the numbers. In the meantime, we are completely unable to send messages. Seems like RingCentral could stick to the 3/31 date and not start turning off SMS in the interim since we have no control over how fast this happens. Or at least warn that you will lose all ability to send messages while the process is pending.