I just had a strange experience I had this evening, using my Monzo card at a Q-Park parking machine.
It went like this:
Put card in machine and wait
Take card out as instructed, without even asking for a PIN
Machine said ‘card declined’
Monzo app said ‘Declined, please use Chip & PIN’ (this was weird because the machine was a Chip & PIN machine)
Switched on ‘Magstripe ATMs’ in the app
Put card back in
Enter PIN as instructed
Transaction went through
It seemed weird because even if the machine was trying to use magstripe initially, I thought magstripe payments were always enabled by default anyway, even if ATMs were switched off? And I have no idea why a machine with a PINpad would bother using magstripe in the first place anyway.