Shows, either Aqua/Ice/Production have often been canceled since the return. ( even pre covid if sea/weather conditions cased a cancellation).
Since the return, they don't announce that a show won't happen, it simply isn't listed on the entertainment schedule. If a show is scheduled and sea/weather conditions case the cancellation, they will make an announcement and try to let you know when (if) it will be rescheduled.
Some shows have not yet returned, and a few have returned for a cruise, but then taken off the schedule fore the next one.
I understand your disappointment. See if there is an aqua showcase, a short display of a dive/synchronized swim and some dancing.
M