Spanish Big banks had been charging hidden fees to ATM withdrawals with the Revolut card for some time, so I always use the small ones.
Today I tried one from Caja Duero, that has been working flawlessly since yesterday. But today I tried twice and got the message “Invalid card” both times.
Then I tried ATMs form BBVA and Bankia (Both big banks here) with the same result.
After that I tried my N26 card with no problem at all.
So, my suspicion that banks in Spain are boycotting Revolut may be a reality.