Just as a follow-up to this earlier problem, I’ll add that it seems to have worked itself out. However, there has definitely been a change that may have been related to that glitch.
The daily digest, for years precisely delivered at 3:01 a.m. Central time, is now precisely being delivered at 5:30 a.m. Something in that schedule change disrupted the normal interaction between the various servers involved last week. With no technical information, however, I won’t be able to figure it out or proceed further.
Which is fine. The point is now moot.