After the recent release of Cloud Softphone's version 6.2.3 update on the Google Play Store, Android users have reported that they are unable to make outbound calls. Our development team identified that this version is causing communication issues with encrypted servers, such as Primevox's. Fortunately, Apple and desktop users (Mac/Windows) are unaffected.
We've reported the issue to Acrobits, the developer of Cloud Softphone, and updates are on the way. For now, we kindly ask Android users to avoid updating the app and recommend disabling automatic app updates until a fix is implemented.