No, it wasn't a mistake if your box didn't record the 4/24 The Price is Right
The first four episodes of Kids Week on The Price is Right were recorded earlier in the year. The College episode was supposed to be recorded in March, but was cancelled because of the "stay at home" policy. CBS aired last year's Kids Week College episode on 4/24 instead, and if your scheduled recording for TPIR is "new episodes only," it was skipped.
The planned Mother's Day Special scheduled for 5/8 was never recorded either, so unless CBS decides to air a new "regular" episode that day (there is one that was pre-empted because of the impeachment trial that has not aired yet), expect the same thing to happen. Also, expect this season's new episodes to end in early June.