A word is misspelled or a blank character is showing where a letter or character should be. What gives?
Check the screen that’s being used in the message – does the screen use only the available characters? If a screen (or JSON page for MQTT) is not formatted to use the characters intended it will show a blank for that character. If your message is spelled correctly in the Web App but is not displaying correctly on the sign, that may be a mechanical issue. Ensure the sign was not intentionally damaged & call us at (215)447-8915 or email firstname.lastname@example.org for support.