My Android chat has been busted since version 6 something (before 7 dropped). Finally emailed Disney Support. Here is their answer:
Thanks for reaching out to us about this!
Our developers are aware of some current issues with the Squad Chat and are definitely working to remedy this. While we do not have any ETA on an update, please make sure to keep checking the developer's notes for future updates.
May the Force be with you!
STAR WARS™: Commander Support
Just keeping Everyone Informed.