After configuring a Twitter channel, what could prevent messages from coming through while other channels work fine?

The reasoning behind why Direct Messaging not being enabled for your Twitter handle is the correct answer lies in the functionality of how Twitter integrates with the Dynamics 365 platform. If Direct Messaging is not enabled, then the system cannot receive private messages sent by users through the Twitter platform. This limitation would lead to a situation where users can still interact through other channels, but any attempt to communicate via Twitter would not be effective, thereby causing a disruption in messaging specifically for that channel.

While there are other potential configurations and settings that could affect communication flow, they do not directly correlate to the inability to receive messages specifically from Twitter. For instance, a Twilio subscription pertains to SMS messaging rather than Twitter. Similarly, enabling Twitter during the provisioning of Omnichannel for Customer Service is a necessary step, but failing to do so would likely prevent the Twitter channel from functioning at all rather than selectively blocking messages. Lastly, while routing rules are crucial for directing incoming messages to the right agents, incorrect routing would mean messages still come through; they would just not be sent to the appropriate customer service representative. Hence, the core issue related to the prevention of messages coming through from Twitter directly ties back to the configuration of Direct Messaging permissions.