Have also received a barrage of SMS/email messages notifying me that my Payall transactions scheduled through to the end of 2028 are now cancelled. They now all appear in the "cancelled" tab in the Payall area of the Citi app.
I was holding out for the faint hope that they would bungle cancelling existing reoccurring transactions (and that I might get at least another month of transactions through before they properly killed it), but it appears my last Payall transaction has been processed.
I got my Premier card in April 2022 but didn't know anything about Payall when I did - I was just planning to churn and cancel it after the 100k QFF points SUB was processed. Thankfully, I stumbled across this thread before that happened! After a month or so of gently testing with smaller manual tranasctions, I implemented a proper set-and-forget set of reocurring transactions to process 4 x $5k Payall transactions each month, which I extended out to the end of 2028 (prior to the 0% fee promotion ending in October 2023).
Save for a couple of stuff-ups where transactions were declined due to the card balance, I got 31 months of Payall at the full $20k p/m utilisation. That worked out to ~310k in QFF points over the period, or ~120k QFF points per year at a cost of $175 p/yr. Not bad for something that required next-to-no effort on my part once it was all set up!
Of course, I am very sad to see it go, but I am stunned that NAB let Payall run as long as they did. I appreciate that integrating the Citi consumer business would not have been a simple task. But the transaction closed on 1 June 2022, and given how much public discussion there was on AFF/OzB/Reddit about Payall, you have to imagine the vast majority of the transactions were obviously suspect. Given how high (relatively) the cash rate has been in that period, the funding costs that NAB would have paid to keep running Payall must have been extraordinary. I would have thought that cost alone would have moved it up the priority list a few pegs.