It is interesting to note that yours may have been triggered by a
refund, as I believe I also issued a partial refund a couple months ago
as a shipping discount. The glitch may involve a lack of recognition on
ebay's end of this refund being paid off...
This is happening to me too. The 1st tier support keeps reiterating the
same stupid script about not having an automatic payment method set up,
even though I have been automatically paying any balances for well over
a year. Literally today my account...