WhatsApp Shop, Channel Messages: a message that fails is now tried again about ten seconds later, instead of waiting ten minutes for the next scheduled run. It is still tried only once more — if that second attempt fails too, the message is marked as failed again and left alone.
WhatsApp Shop, Channel Messages: messages now go out ten seconds apart instead of five, which leaves WhatsApp more room and makes a refused message far less likely.
WhatsApp Shop, Channel Messages: a batch is now sent through to the end in one go. Previously only the first thirty or so messages went out and the rest waited ten minutes for the next run, so part of a campaign reached customers long after the rest.
WhatsApp Shop, Channel Messages: a failed message now says that it is waiting to be tried again, instead of naming a time that had already gone by.
Fix
WhatsApp Shop, Channel Messages: the second attempt at a failed message could be delayed by twenty minutes rather than ten, because the retry became due moments after the run that should have carried it had already passed.
WhatsApp Shop, Channel Messages: scheduling more messages than one run could send left the remainder to the following run, ten minutes behind the rest of the same campaign.