An official says they never got a text.
Open the roster sidebar (click your officiating group's name) and check View Delivery Status first; it'll tell you exactly what happened (not sent, failed, opted out). If their phone number is wrong, click Edit on that official right in the roster sidebar to fix it, then use Send text to text just them. See O-04.
The stats at the top don't match what I expect.
"Requests Sent" counts officials actually contacted, not your whole roster; if you haven't sent anything yet for this event, it'll show 0 even with a full roster. "Haven't Responded" counts against your whole roster, including anyone who hasn't been sent a request at all.
I can't send an availability blast; it says the event has already started.
This is intentional. Availability blasts are blocked once an event's start date has passed, since asking for availability on an event that's already underway isn't useful. If you genuinely need to re-blast a live event, contact Tourney Direct.
An official's assignment doesn't reflect their availability.
Assignment doesn't automatically respect availability. The assign popover shows availability as a note next to each name (and grays out anyone marked unavailable for that time), but it's still up to you to pick the right person.
I fixed an official's phone number but they still didn't get the resend.
Double-check you resent after saving the edit; Edit only updates their contact info, it doesn't automatically re-trigger a text. Use Send text (single official) or Send availability request to more officials afterward.