The TextUs Chrome Extension is displaying a blank screen for all users who are using the most recent update of Google Chrome (73.0).
The TextUs Web App (app.textus.com) remains unaffected, and all messages should be sending and receiving successfully.
We have identified the issue and are working on a fix. If having functionality of the Chrome Extension is of utmost importance for your users, the only solution at the moment would be to downgrade to the previous Chrome version. (https://support.google.com/chrome/a/answer/7125792?hl=en
We are working on a fix with the highest priority and we will continue to post updates here as we have them!