We want to use your High Volume SMS plan that is highlighted on your products page but really been having hard time getting to the point of actually using it.
In order for the application to graduate to production, we have to exercise all permission via sandbox endpoint. However, we can't exercise A2P permissions because those api endpoints aren't available in sandbox, so we ended up applying without the permission. The arbitrary process of meeting requirement and waiting for review approval wasted us 2 weeks.
Once we finally got the production credentials, we enrolled one number into High Volume SMS plan, but never gotten assigned the A2P permission. Contacted email@example.com and been waiting for another week without any updates. What is the reason for us not being able to add permissions after app graduation? Requirements change in software all the time and would we really have to create a new application and go through 2 week graduation process to just use one of your features?
Help us out here, we want to use your product but we're starting to get a feeling that you don't want us to use it.