Perhaps the task description wasn’t clear enough. The ‘Send Message’ task hint does not mean to open your phone and send a message, but rather it’s a part of the storyline. Try skipping time and look for the exclamation marks on the map; you will understand the meaning of this task description.
Initially, when designing, I wanted the task description to refer more to the ‘story content’ rather than the gameplay. This way, it would feel less abrupt.