Issue buying train tickets

Tried to buy train ticket yesterday with both my personal & joint account but neither was accepted.
This was at a Virgin terminal within a station.
Had to use my starling card in the end.
Didn’t even get to point of entering a PIN.
Contactless didn’t work either.

Curious. I was able to use Monzo with the Virgin Trains terminal at Crewe last month, so it is not a blanket ban like that Asda grief, but I am not up that way that often

I seem to recall a similar issue on Mondo prepaid cards and early Monzo current account cards two to three years ago.